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What details should be processed before using thick-walled steel pipes?
1. Thick-walled steel pipe cutting: According to the actual required pipeline length, metal saws and toothless saws should be used for cutting pipes. When using water welding in the cutting process, there must be a method of protecting the raw materials. When cutting, the fireproof and heat-resis...Read more -
Large diameter straight seam steel pipe technological process and main equipment（2）
Large diameter straight seam steel pipe technological process and main equipment In order to change the roundness of the steel pipe, the steel pipe finishing machine: apply strong pressure from the outside to the long round pipe with poor roundness section by section, so that it can meet the rele...Read more -
Large diameter straight seam steel pipe technological process and main equipment（1）
Large diameter straight seam steel pipe technological process and main equipment（1） The two plate edges are processed into the desired form at a time. The steel plate edge milling machine: machine the two sides of the plate material for tube making and make the parallelism of the two plate edge...Read more -
API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE
API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE FOB TIANJIN USD/TON Outside Diameter 外径 (mm) 219 273 324 356 406 457 508 610 711 762 813 914 Wall Thickness 6 544 544 544 544 544 544 544 544 544 544 544 544 壁厚 (mm) 7 544 544 544 544 544 544 544 544 544 544 544 544 ...Read more -
API 5L/ASTM A106 GR.B, Seamless Carbon Steel Pipe
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API 5L GR.B/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL PIPE
API 5L GR.B/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL PIPE FOB TIANJIN Outside Diameter 外径 (mm) USD/TON 406 457 508 609.6 711.1 762 812 863.6 Wall 8 670 664 670 657 657 657 657 657 Thickness 9.53 664 651 657 638 638 638 638 638 壁厚 (mm) 10 632 619 626 638 638 638 638 638 12...Read more -
API 5L/ASTM A53 GR.B (Small Diameter ERW Steel Pipe)
API 5L/ASTM A53 GR.B (Small Diameter ERW Steel Pipe) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 33.4 (1″) 2.1-2.4 522.12 Φ133 3.0-5.75 506.95 2.5-3.25 504.42 6.0-...Read more -
API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe)
API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 219、245 5.0-11.75 528.33 426 5.75-11.75 559.94 273 5.0-11.75 528.33 12.5-13...Read more -
API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE)
API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 245, 273 5.0-9.28 545.02 450, 457, 508, 530 6.5-11.98 576.62 9.4...Read more -
The reason for the misalignment of the head or tail of the steel pipe
The reason for the misalignment of the head or tail of the steel pipe 1) The position of the import and export rollers is incorrect; 2) The center of the ring frame is wrong; 3) The roundness of the seam pressure roller is not good, and the position of individual pressure rollers is deviated; ...Read more -
Acceptance of straight seam steel pipe
1. The inspection and acceptance of straight seam steel pipes shall be carried out by the technical supervision department of the supplier. 2. The supplier guarantees that the delivered straight seam steel pipes meet the requirements of the corresponding product standards. The buyer has the right...Read more -
Quenching technology of straight seam welded pipe
Straight seam welded pipe surface quenching, tempering, heat treatment is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness and effective hardened layer depth. Hardness testing can use Vickers hardness tester, Rockwell or...Read more