SHENGTIAN GLOBAL

　　Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or steel strip after crimping and forming. The welded steel pipe has the advantages of simple production process, high production efficiency, more varieties and specifications, and less equipment, but its general strength is lower than that of seamless steel pipe. Since the 1930s, with the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technology, the weld quality has been continuously improved, the varieties and specifications of welded steel pipes have been increasing, and the seamless steel pipes have been replaced in more and more fields. Welded steel pipe is divided into straight welded pipe and spiral welded pipe according to the form of weld. 　　The straight welded pipe has the advantages of simple production process, high production efficiency, low cost and rapid development. The strength of  ASTM A252 Spiral Welded Steel Pi...

PIC-(Round Section Carbon Steel Galvanized Seamless Steel Pipe) 　　 Round Section Carbon Steel Galvanized Seamless Steel Pipe 　　Standard:API, BS, JIS, DIN, ASTM, GB 　　Grade Group:10#-45#, Q195-Q345, 16Mn, STBA20-STBA26 　　Grade:10#, 20#, 45#, Q235, Q345, Q195, Q215, 16Mn 　　Thickness:2 - 40 mm, 1.0 - 28mm 　　Section Shape:Round 　　Outer Diameter(Round):21.3 - 609 mm 　　Place of Origin:Hebei, China (Mainland) 　　Application:Structure Pipe, Structure Pipe 　　Technique:ERW 　　Certification:BSI, CE, ISO-9001, CE, AIF, TUV 　　Surface Treatment:Galvanized 　　Special Pipe:Thick Wall Pipe 　　Port:Tianjin

　　New Design 18 Inch Seamless Steel Pipe With Great Price 　　Standard:API, ASTM, DIN, GB, JIS 　　Grade Group:10#-45#, A53-A369, ST35-ST52 　　Grade:10#, A53(A,B), A312, A335 P11, A335 P5, A335 P9 　　Thickness:1 - 60 mm 　　Section Shape:Round 　　Outer Diameter(Round):6 - 1219 mm 　　Place of Origin:China 　　IndustryTechnique:Hot Rolled 　　Surface Treatment:mill,painted,oiled,galvanized 　　Shape:Round 　　Port:Tianjin

　　 ASTM A53 GR.B Seamless Steel Pipe 　　Standard:ASTM, API 　　Grade Group:A53-A369 　　Grade:A106(B,C), ASTM A106 Grade B 　　Thickness:1.24 - 59.54 mm 　　Section Shape:Round 　　Outer Diameter(Round):25.0 - 356.0 mm 　　Place of Origin:China 　　Application:For oil and water pipes 　　Technique:Cold Drawn 　　Certification:API 　　Length:6meter or 12meter 　　Keyword:seamless steel pipe 　　Usage:Transportation oil and water 　　Port:Tianjin

　　 ASTM A106 Seamless Steel Pipe for Oil and Gas Line 　　Standard:API, ASTM, BS, DIN, GB, JIS 　　Grade Group:10#-45#, 16Mn, A53-A369, API J55-API 　　Thickness:1.4 - 14 mm 　　Section Shape:Round 　　Outer Diameter(Round):21 - 609.6 mm 　　Place of Origin:China 　　Technique:Hot Rolled 　　Certification:API 　　Special Pipe:API Pipe 　　Size:21-609.6mm 　　Wall Thickness:1.4-14mm 　　Length:1-12m 　　Port:Tianjin

　　 ASME B36.10 13 Inch Sch40 Seamless steel pipe 　　Outer Diameter：10.3-762mm 　　Length：4-12meters 　　Shape：Round 　　Material：A53(A,B), A106(B-C), API 10#, 20#, 45#, 16Mn 　　Standard：API 5L, ASTM A106 GRB，ASTM A53-2007 　　Surface：Seamless 　　Certification： ISO9001, SGS 　　Origin：China 　　Transport Package： Hexagonal Shape Bundles Wrapped 　　Trademark： Shengtian 　　Port:Tianjin

　　 ASTM A53 12 Inch St37 Carbon Seamless Steel Pipe 　　Standard:API, ASTM, BS, GB, JIS 　　Grade Group:A53-A369, Q195-Q345, ST35-ST52 　　Thickness:2.5 - 15 mm 　　Section Shape:Round 　　Outer Diameter(Round):21.3 - 406 mm 　　Place of Origin:China 　　Application:Fluid Pipe 　　Technique:ERW 　　Certification:API 　　Surface Treatment:Black Pipe / Primer painted / 3LPE / Galvanized / As requirement 　　Special Pipe:Thick Wall Pipe 　　Brand Name:Shengtian

　　 DIN2391 St52.3 Cold Rolled Seamless Steel Pipe 　　Standard:ASTM, DIN, GB 　　Standard2:ASTM A106-2006, ASTM A789-2001, DIN 2391, GB/T 8713, GB/T3639 　　Grade Group:10#-45#, 16Mn, Q195-Q345, ST35-ST52 　　Thickness:2 - 30 mm 　　Section Shape:Round 　　Outer Diameter(Round):30 - 250 mm 　　Place of Origin:China 　　Application:Hydraulic Pipe 　　Technique:Cold Rolled 　　Certification:iso9001:2008 　　Type:honed pipe 　　Surface:Customers Requirement 　　Material:Carbon steel

PIC-(ASTM A106 Gr.B High Quality Carbon Seamless Steel Pipe) 　　 ASTM A106 Gr.B High Quality Carbon Seamless Steel Pipe 　　Standard:ASTM, DIN, GB, JIS 　　Grade Group:A53-A369, Cr-Mo alloy 　　Thickness:1 - 120 mm 　　Section Shape:Round 　　Outer Diameter(Round):6 - 2500 mm 　　Place of Origin:China 　　Application:Industry,chemical industry 　　Technique:Hot Rolled 　　Certification:BV,TUV 　　Surface Treatment:Painted,Zinc 　　Secondary Or Not:Non-secondary 　　Surface:Black painted,PE coated 　　Length:6m,5.8m,11.8m,12m, or as required 　　Packaging Details:Standard export seaworthy package or as required. 　　Port:Tianjin port

　　 API 5L Seamless Steel Pipe 　　Standard:API, ASTM 　　Grade Group:A53-A369, API J55-API P110 　　Thickness:1.24 - 59.54 mm 　　Section Shape:Round 　　Outer Diameter(Round):1 - 48 inch 　　Place of Origin:China 　　Trademark:Shengtian 　　Application:For oil and water pipes 　　Technique:Cold Drawn 　　Certification:API 　　Surface Treatment:Spray high quality black anti-rust paint 　　Special Pipe:API Pipe 　　Length:6meter or 12meter 　　Surface:Black Painted 　　Material:Gr.B 　　Port:Tianjin Port

　　 API 5CT 1.5Inch Seamless Steel Pipe 　　Standard:API 　　Grade Group:API J55-API P110 　　Thickness:38 - 38.1 mm 　　Section Shape:Round 　　Outer Diameter(Round):228.5 - 228.6 mm 　　Place of Origin:China 　　Application:Oil Pipe 　　Technique:Hot Rolled 　　Certification:API 　　Surface Treatment:Galvanized 　　Length:6m,5.8m,11.8m,12m, or as required 　　Packaging Details:Standard export seaworthy package or as required. 　　Wallthickness:1.5inch 　　Port:Tianjin

　　 API 5L PSL1 Seamless Steel Pipe 　　Standard:API, ASTM 　　Grade Group:10#-45# 　　Thickness:2.77 - 59.54 mm 　　Section Shape:Round 　　Outer Diameter(Round):21.3 - 914.4 mm 　　Place of Origin:Hebei 　　Brand Name:HEBEI SHENGTIAN PIPE FITTING 　　Application:Oil Pipe 　　Technique:Hot Rolled 　　Material:Carbon steel seamless steel pipe 　　Connection:Welding 　　Model Number:1/2"-48" 　　Head Code:round steel pipe 　　Secondary Or Not:Non-secondary

　　 ASTM A53 DN600 Seamless Steel Pipe 　　Standard:ASTM, GB, BS, JIS, DIN, API 　　Grade Group:Q195-Q345, API J55-API P110, A53-A369, CrNi alloy 　　Section Shape:Round 　　Outer Diameter(Round):0.5 - 24 inch 　　Place of Origin:China 　　Application:Oil or Gas or Water or Structure Pipe 　　Thickness:0.6 - 20 mm 　　Surface Treatment:Galvanized 　　Certification:ISO 　　Technique:Hot Rolled 　　Surface:Oil,Black Painted 　　Length:1-12m 　　End protector:Plastic Pipe Cap 　　Process:Thread,Punching,Beveled,Painted

         DN200 Q235B ERW Black Welded Steel Pipe 　　Technique: ERW 　　Surface Treatment: Black/Galvanized/3PE/3PP/Fbe 　　Section Shape: Round 　　Thickness: 2 - 16 mm 　　Trademark: Shengtian 　　Specification: 300 - 1200 mm 　　Type: Welded 　　Material: Carbon Steel 　　Usage: Pipeline Transport, Oil/Gas Drilling, Chemical Industry 　　Outer Diameter: 33.4 - 457.2 mm 　　End: Beveled 　　Transport Package: in Bundles by Steel Strips/Pallet 　　Origin: China

         ASTM A53 ERW Carbon Black Welded Steel Pipe 　　Standard:API, ASTM, BS, DIN, JIS 　　Grade Group:10#-45#, 16Mn, Cr-Mo alloy, Mo 　　Grade:10#, 20#, 45#, 16Mn, 12Cr1MoV, 34CrMo4, 30CrMo, 　　Thickness:2 - 80 mm 　　Place of Origin:China 　　Application:Construction,structure,oil&gas pipe 　　Technique:Hot Rolled 　　Certification:API 　　Special Pipe:API/EMT/Thick Wall Pipe 　　Brand name:Shengtian 　　Length:random,range fixed or fixed length 　　Usage:Constrution,Structure,Furniture,Oil Gas Transport 　　Port:Tianjin port

        ASTM A53 30 Inch Welded Steel Pipe 　　Standard:ASTM, BS, API, DIN, JIS, GB 　　Standard2:ASTM A106-2006, ASTM A53-2007, BS 1387 　　Grade Group:A53-A369, 16Mn, Q195-Q345, 10#-45# 　　Grade:A53(A,B), A106(B,C), 16Mn, Q235, Q215, Q345, Q195 　　Thickness:0.5 - 20 mm 　　Section Shape:Sqaure 　　Place of Origin:China 　　Application:Structure Pipe 　　Technique:ERW 　　Certification:ISO SGS CE 　　Surface Treatment:Black/ Galvanized/ Oiled 　　Special Pipe:Thick Wall Pipe 　　Product name:ERW welded steel pipe 　　Keyword:Steel pipe 　　Material:Q195/Q215/Q235/Q345 　　Port:Tianjin

        API 5L 14Inch Carbon Welded Steel Pipe 　　Technique: Cold Rolled/Cold Formed/Hot Finished/Cold Drawn 　　Surface Treatment: Bared, Oiled, Color Paint, 3lpe, or Other 　　Section Shape: Round, Square, Rectangular 　　Length: 5.8~12m or Upon Customer′ Requirements 　　Product name:API 5L 14Inch Carbon Welded Steel Pipe 　　Trademark: Shengtian 　　Origin: China 　　Type: Welded 　　Thickness:1.24 - 59.54 mm 　　Usage: Pipeline Transport, Special Purpose 　　Specification: CE, ISO, SGS 　　Application:For oil and water pipes

　　 API N80 ERW Seamless Welded Steel Pipe 　　Standard:API, ASTM, DIN, GB 　　Grade Group:10#-45#, 16Mn, A53-A369, Q195-Q345, ST35-ST52 　　Thickness:2 - 50 mm 　　Section Shape:Round 　　Outer Diameter(Round):10 - 630 mm 　　Place of Origin:China 　　Application:Oil Pipe 　　Technique:ERW 　　Surface Treatment:2PE/3PE/ Spray paint 　　Special Pipe:API Pipe 　　shape:round 　　Length:5.8-12m 　　Usage:Oil Gas Sewage Transport 　　Material:Q195/Q215/Q235/Q345

　　 Q235 SSAW Welded Steel Pipe for Gas and Oil 　　Standard:GB 5310-1995, GB 3087-1999, DIN 1626, DIN 1629/3, DIN EN 10216-1-2004 　　Grade Group:10#-45#,10Cr9Mo1VNb, Q195-Q345 　　Thickness:4 - 18 mm 　　Section Shape:Round 　　Outer Diameter(Round):219 - 3220 mm 　　Place of Origin:China 　　Trademark:Shengtian 　　Application:Structure Pipe 　　Technique:ERW 　　Certification:API 　　Special Pipe:API Pipe 　　Length:6m/9m/12m or other size 　　Surface:Customers't Requirement 　　Material:Q195/Q215/Q235/Q345 　　Usage:Constrution,Structure,Furniture,Oil Gas Transport 　　Transport Package: in Bundles by Steel Strips/Pallet 　　Port:Tianjin port

　　 ASTM A106 Gr.B Welded Steel Pipes 　　Standard:API, ASTM, BS, GB, JIS 　　Grade Group:10#-45#, 16Mn, Q195-Q345 　　Thickness:0.5 - 15 mm 　　Section Shape:Round 　　Outer Diameter(Round):10 - 1000 mm 　　Place of Origin:China 　　Application:Structure Pipe 　　Certification:SGS 　　Special Pipe:Thick Wall Pipe 　　Material:Q195/Q215/Q235/Q345 　　Usage:Construction Structure 　　End protector:Plastic Pipe Cap 　　Length:1-12m 　　Surface:Black Varnished

　　 API 5CT PSL2 Seamless Welded Steel Pipe 　　Standard:API, ASTM, DIN, GB, JIS 　　Grade Group:10#-45#, 16Mn, Q195-Q345, ST35-ST52 　　Thickness:1 - 220 mm 　　Section Shape:Round 　　Outer Diameter(Round):6 - 2500 mm 　　Place of Origin:China 　　Application:Boiler Pipe 　　Technique:Cold Rolled 　　Certification:BV TUV 　　Surface Treatment:Black 　　Special Pipe:Thick Wall Pipe 　　Alloy Or Not:Non-alloy 　　Secondary Or Not:Non-secondary 　　Model Number:x52 x65 x70

　　 API 5L SSAW Welded Steel Pipe 　　Standard:API, BS, GB/T3091,API 5L and so on 　　Grade Group:10#-45#, Q195-Q345 　　Thickness:5 - 28 mm 　　Outer Diameter(Round):219 - 2020 mm 　　Place of Origin:China 　　Application:Fluid Pipe, Fluid transport and construction 　　Technique:SSAW 　　Certification:BSI 　　Surface Treatment:Galvanized 　　End protector:Plastic Pipe Cap 　　Special Pipe:API Pipe 　　Secondary Or Not:Non-secondary 　　Outer Diameter:219mm--2020mm 　　Wall Thickness:5mm--28mm 　　Length:1-12m 　　Port:Tianjin

　　 API 5L Spiral Welded Steel Pipe 　　Standard:API, GB 　　Grade:A53,16Mn,10#,45#,Q235,Q345 　　Thickness:5 - 25.5 mm 　　Section Shape:Round 　　Outer Diameter(Round):219 - 3820 mm 　　Place of Origin:China 　　Application:Fluid Pipe 　　Technique:ERW 　　Certification:API 　　Surface Treatment:Galvanized, black painting, anti-rust painting 　　Alloy Or Not:Non-alloy 　　Port:Tianjin

　　 ASTM A252 Spiral Welded Steel Pipe 　　Standard:JIS,BS,DIN,API,ASTM 　　Grade Group:STB35-STB42,Q195-Q345,A53-A369,10#-45#, 16Mn 　　Section Shape:Round 　　Outer Diameter(Round):30 - 800 mm 　　Place of Origin:China 　　Application:Structure Pipe 　　Thickness:3 - 70 mm 　　Surface Treatment:Oiled,black painting,anti-corrosion coating 　　Certification:CE 　　Technique:Hot Rolled 　　Key Word:Spiral pipe 　　Material:Carbon steel 　　Price Term:CIF,CFR,FOB 　　Payment:L/C,T/T

　　In the production process of cold-formed Seamless Carbon Steel Oil Pipe, the key technologies mainly include four aspects: high frequency welding technology, forming technology, cutting technology and rapid roll change technology. It should be known that these technologies will directly affect the quality and production efficiency of cold-formed seamless carbon steel oil pipe products. 　　First of all, let's understand the content of forming technology, one of the key technologies in seamless carbon steel oil pipe production. From the analysis of the technology of cold-formed section steel, we will find that the process of circular transformation is mainly used in the production abroad. Comparatively speaking, the advantages of this process are that the residual stress of finished  ASTM 10 Inch Seamless Carbon Steel Oil Pipe  is small and the radius of corner arc is small. However, its disadvantages are high energy consumption, high cost and unsatisfactory surface quality. ...

　　Today, the price of large-caliber thick-walled spiral steel pipe is still falling mainly, ranging from 10-20 yuan per ton. On the market side, today's steel market is weak adjustment, market mentality is slightly loose, business feedback inquiries are few, the atmosphere is not good, trading performance is not ideal, downstream vendors are cautious, wait-and-see mainly. Since September, the recovery of terminal demand is not obvious, and the market performance of large-caliber thick-walled spiral pipe is under pressure. For the future market, the supply and demand fundamentals have not changed significantly. The price of large-caliber thick-walled spiral pipe has limited space to rise and fall. Near the end of the month, capital pressure still exists. 　　From the point of view of demand, although the Mid-Autumn return market transaction broke out, the sustainability is weak, the whole week transaction slightly fell back than last week. Next week is the last week before the Natio...

　　With the increasing demand for seamless welded steel pipes in the market, seamless steel pipe manufacturers have significantly improved and improved their service quality. They are not only committed to the production of seamless welded steel pipe materials, but also to the operation and logistics to ensure that goods can be delivered to customers in good condition. This kind of thoughtful service makes the purchase easier. Seamless welded steel pipe generally refers to seamless welded steel pipe. This kind of pipe material can make necessary adjustment to the material selection and specific manufacturing process according to the actual needs of customers in the production process, so that the pipe material produced will have more significant advantages. 　　Seamless welded steel pipe has always been a kind of high utilization rate. No matter in building materials, pipeline transportation, or machinery manufacturing industry, we can see the figure of seamless welded steel pipe. As an...

　　Seamless steel pipe is a kind of typical seamless welding pipe material. Because of this advantage, this kind of pipe material is superior to ordinary steel pipe. There are various kinds of steel pipes, and there are many material divisions. However, the most common one is still carbon steel. According to different purposes, the materials are adjusted to meet the needs. Seamless steel pipes emerge in such a market, and are constantly developing and improving. 　　There are many kinds of pipe materials, and  ASTM A106 Sch XS Carbon Seamless Steel Pipe  is just one of them. Compared with other kinds of pipe materials, the advantages of seamless steel pipe are very significant. First of all, this type of pipe material is seamless. Therefore, as the material used for pipeline transportation, the leakage probability will be minimized. Secondly, the advantages of seamless steel pipe in quality are also very significant. It is precisely because of these reasons that this kind of pi...

　　The heating furnace used in the production of seamless steel oil casing pipe is the annular heating furnace. In addition to this kind of heating furnace, there are other kinds of heating furnaces. According to the different manufacturing methods of seamless steel oil casing pipe, there are also differences in the specific heating methods. After the completion of heat treatment, further processing, including straightening, finishing and inspection, is needed to ensure that there is no The quality of seamless steel oil casing pipe can be kept at the highest level when it comes out of the factory, so the inspection steps are essential. 　　The demand for various seamless steel oil casing pipe accessory materials is also increasing, especially for various pipeline materials. From the current market environment, various types of pipeline materials have a wide range of types, different types of pipelines, and different fields of application. Among them,  API 5L X42 N80 Seamless Steel O...

　　The wall thickness of spiral steel pipe is usually the bottom difference. The bottom difference of general standard spiral steel pipe is 1mm, and the bottom difference of national standard spiral steel pipe is 0.5mm. Is the wall thickness after the bottom difference generally the actual wall thickness of spiral steel pipe? Actually not! 　　The wall thickness of the spiral steel pipe is 6mm, and the spiral steel pipe manufacturer orders 5mm strip steel for production in the steel plant. That is to say, the difference of the bottom thickness of the spiral steel pipe manufacturer just tells you that we use the difference of the bottom thickness of the strip steel to produce, rather than the actual wall thickness of the spiral steel pipe is the difference of the bottom thickness of the strip steel. In fact, the thinnest part of the spiral steel pipe is not 5mm, because the strip steel is 5mm thick Its wall thickness is not uniform, and its thickness is 4.8mm, 4.9mm, 5.0mm, 5.1mm and so ...

　　The price of spiral steel pipe varies, the downstream demand of terminal is good, the price of spiral steel pipe continues to rise, the profit space of spiral steel pipe production enterprises increases, the enthusiasm of terminal procurement is good, the inventory continues to decline, the market mentality is good, and the terminal price of thermal insulation spiral steel pipe rises and falls. After entering December, the terminal demand will weaken, the inventory and inventory of spiral steel pipe market will slow down or slow down, the market transaction pressure will increase, and the terminal acceptance of high price spiral steel pipe will decline. At present, the market's attitude towards the price trend of thermal insulation spiral steel pipe in December is mostly down, and it is expected that the price of spiral steel pipe will be weakened mainly by shocks. 　　The trading volume of  API 5L x42 Spiral Steel Pipe for Oil and Gas  market is obviously large, the overall...

　　The delivery state of seamless steel pipe is generally delivered after heat treatment in hot rolling state. Because, the hot-rolled seamless steel pipe after the quality inspection should be strictly selected by the staff, and every step is striving to be perfect, so as to achieve excellence. After the quality inspection, the surface should be coated with oil, followed by many cold drawing experiments, and after the hot rolling treatment, the perforation experiment should be carried out. If the perforation diameter is too large, the straightening correction should be carried out. After straightening, it is transmitted to the flaw detector by the transmission device for flaw detection experiment. This step is also essential. Finally, it is labeled and placed in the warehouse after specification arrangement. Through this series of steps, in order to better ensure the quality of seamless steel pipe before delivery. 　　Therefore, it is safe to choose to buy this type of pipe materials, ...

　　1) Small and medium sized section steel, wire rod, steel bar, medium diameter spiral welded steel pipe, steel wire and steel wire rope can be stored in a well ventilated material shed, but they must be covered and padded. 　　2) Some small-sized steel, sheet steel, steel strip, silicon steel sheet, small caliber or thin-wall spiral welded steel pipe, all kinds of cold-rolled and cold drawn steel, as well as high price and easily corrosive metal products can be stored in the warehouse. 　　3) The site or warehouse where  ASTM A53 Gr.B LSAW Spiral Welded Steel Pipe  products are kept shall be clean and free of water and away from factories and mines that produce harmful gases or dust. Weeds and all sundries shall be removed on the site to keep the steel clean. 　　4) Large section steel, steel rail, dishonorable steel plate, large-diameter spiral welded steel pipe and forgings can be stacked in the open air. 　　5) In the warehouse, it is not allowed to stack with acid, alkali...

　　When there is less cutting allowance reserved at both ends of seamless steel oil pipe, due to the structure of the detection device, the two ends sometimes cannot be effectively detected, and the end is the most likely part with cracks or other defects. If there is a potential crack tendency at the end, the welding heat effect during installation may also cause potential crack growth. Therefore, we should also pay attention to the detection of a certain area of seamless steel oil pipe after welding, and find the expansion of steel pipe end defects in time. 　　 API 5L X70 LSAW Seamless Steel Oil Pipe  is mainly used in pipeline transportation, which can be used to transport some fluids, such as some energy sources, etc. the transportation of oil and natural gas has been realized by relying on seamless steel oil pipe. In modern society, the application field and scope of seamless steel oil pipe once again make 16Mn seamless steel oil pipe widely used. The general purpose seamless ...

　　For seamless steel oil pipe made of tensile specimens, the tensile testing machine of the specimens will be pulled to the fracture. Another measurement, usually only the mechanical properties of tensile strength or more, yield strength, elongation and reduction of area will be measured. Tensile test is a test method for metallic materials. Almost all metallic materials, as long as the required mechanical properties, provide the basic mechanical properties for tensile test. Especially for those materials that are not easy to form, hardness test and tensile test are the only means to test mechanical properties. 　　The seamless steel oil pipe hardness test is a rigid indenter hardness tester that is pressed slowly into the surface of the specimen under the specified conditions, and then the indentation depth or size is tested to determine the hardness of the material. Seamless steel oil pipe hardness test is the simplest, quickest and easiest way to test the mechanical properties of ma...

　　The heat preservation spiral steel pipe is a kind of pipe based on the spiral steel pipe, and then the outer wall is treated with heat preservation. Therefore, the damage of the heat preservation layer must be prevented when it is used. 　　1.Construction preparation of heat preservation spiral steel pipe before use 　　The pipe trench shall be dug well, and the bricklaying of the pipe well shall be completed. Various types of heat preservation spiral steel pipes are required. All necessary tools, including electric welding machine, cutting machine, electric hammer, polishing machine, etc., can be completed. A series of preparations can be made to start the installation. 　　2. Installation of heat preservation spiral steel pipe 　　According to the drawing design, position the pipeline, prefabricate the pipe rack according to the site conditions, cut the materials according to the design and site, polish the groove with a sander, and then weld. 　　3.  DN1000 ERW Spiral Steel Pi...

　　Can L245 Galvanized Steel Pipe be replaced by Q235? The answer is No. 　　L245 and Q235 are both galvanized steel pipes, but they are different in performance and application range. 　　Q235 ordinary carbon structural steel is also called A3 steel. Ordinary carbon structural steel common plate is a kind of steel material. Q stands for the yield limit of this material. The latter 235 is the yield value of this material, which is about 235mpa. 　　The yield value will decrease with the increase of the thickness of the material. Due to the moderate carbon content, the comprehensive performance is better, the strength, plasticity and welding properties are well matched, and the  BS1387 2 Inch Galvanized Steel Pipe Supplier  most widely used. L245 galvanized steel pipe is a kind of galvanized seam steel pipe, which is made of steel rolling plate as raw material, often extruded and welded by automatic double wire double-sided submerged arc welding process.

　　The seamless steel boiler pipe can be used in pipeline, thermal equipment, mechanical industry, petroleum geological exploration, container, chemical industry and special purpose. 　　1.  ASME SA335 P11 Seamless Steel Boiler Pipe  are mainly used to manufacture water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, large and small smoke pipes, arch brick pipes, etc. 　　2.high pressure boiler pipe is mainly used to manufacture superheater pipe, reheater pipe, air pipe, main steam pipe, etc. of high pressure and ultra-high pressure boiler. The supply and demand trend of high-pressure boiler pipe industry is generally stable, but the supply and demand situation of various sub industries will be further differentiated. Industry insiders pointed out that the most critical link is the use and promotion of new energy-saving and heat preservation 20g high-pressure boiler pipe equipment. 　　3.New energy-saving 20g high-pr...

　　Fluid pipe is a kind of steel pipe with hollow section and no weld seam from head to tail. Steel pipe is also an indispensable material for all kinds of conventional weapons. Steel pipe is used to manufacture barrel and barrel. According to the different cross-sectional shapes, steel pipes can be divided into circular pipes and special-shaped pipes. Because the circle area is the largest under the condition of the same circumference, more fluid can be transported by the circular pipe. 　　In addition, when the circular section bears the internal or external radial pressure, the force is relatively uniform, so most of the fluid pipes are round pipes. (Note: with the continuous improvement of current technology, the  Round Shape Sch160 Fluid Pipe  is not necessarily seamless, but may also be seamless steel pipes. This process has been approved for use in low and medium pressure boilers and transmission fluid pipes. When customers order the fluid steel pipes, they must be in t...

　　After a series of processing, such as forming, welding and cooling, the welded steel pipe still needs to be sawed off. In this link, the length of the process ruler directly affects the quality and sales of the finished welded steel pipe, so the length of the ruler should be controlled within ± 5mm. Not only that, in actual operation, the staff must also operate in strict accordance with the following procedures: 　　It should be noted that if the  API 5L Spiral Welded Steel Pipe  unit needs to be stopped for a long time, the step-by-step power supply should be turned off first, and the saw blade motor stops running, which saves energy. At the same time, welded steel pipe is necessary to check the quality of the working pulse of the speed photoelectric code frequently to prevent it from hitting the encoder or immersing it in water. According to different specifications of welded pipe, adjust the position and grinding shape of flat head cutter in time. The end face of welded...

　　Q345B seamless pipe is one of the steel materials. In the past, steel was called 16Mn. 　　16，The carbon content of the steel is about 0.16%. However, Mn is proposed separately because of the high content of manganese in the five elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur s). Q345B seamless pipe about 1.20-1.60%. 　　Q345B alloy steel pipe belongs to low alloy steel plate series. In this series, it is the most common material or brand steel plate. 　　According to the special requirements, some special treatment can be carried out on the steel plate: heat treatment and Z-direction performance. 　　 ASTM A106 Grade B 3PE Coated Seamless Pipe  has good comprehensive performance, low temperature performance, cold stamping performance, welding performance and machinability. 　　Application examples: mining, transportation, chemical and other machinery. 　　Q345B seamless pipe weight formula: [(outer diameter wall thickness * wall thickness] * 0.02466 = kg / M...

　　The hollow section usually loses its bearing capacity at 450 ~ 650 ℃, which leads to great deformation, resulting in bending of steel column and steel beam. As a result, it can not continue to be used due to excessive deformation. Generally, the fire resistance limit of the unprotected hollow section is about 15 minutes. The length of this time is also related to the heat absorption rate of the component. The following describes the fire protection measures for several different hollow section. 　　1. Outsourcing layer.Hollow section can be cast-in-situ or sprayed by adding an outer coating on the surface of hollow section. The outer layer of cast-in-place solid concrete is usually reinforced with steel wire mesh or reinforcement to limit the shrinkage cracks and ensure the strength of the shell. 　　2. Water filling. Water filling in  ASTM A36 Gr.B 32mm Square Hollow Section  is the most effective protective measure against fire. This method can keep the temperature of hol...

　　Seamless steel oil pipeline is a kind of low-carbon steel pipe. Carbon steel is divided into low carbon steel, medium carbon steel and high carbon steel. In general, if there is no special requirement for clad steel seamless steel oil pipeline, No.20 seamless steel oil pipeline is generally used. The material of 20 steel seamless steel oil pipeline is 20 steel, which is not quenched and has no brittleness of tempering. The cold deformation is of high plasticity, which is generally used for bending, rolling, bending and hammer arch, etc. the welding performance of arc welding and contact welding is very good, and the thickness of gas welding is small. Generally, it is used to manufacture the bars with low pressure resistance but high toughness demand. 　　The outer diameter and wall thickness of seamless steel oil pipeline can have a little deviation, but it should conform to relevant regulations. As one of the most important components of steel products, the seamless steel oil pipel...