API 5CT Casing and Tubing Grades: J55, K55, N80, L80, and P110
Compare API 5CT casing and tubing grades and learn how size, weight, connection, end finish, inspection, and well conditions shape an OCTG order.
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Steel Pipe Knowledge Center
Practical guidance for specifying, comparing, and purchasing steel pipe for international projects.
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Steel pipe industry guides
Nine practical references for engineering, procurement, and project teams.
ASTM A335 P11 vs P22 vs P91 Alloy Steel Pipe
Compare ASTM A335 P11, P22, and P91 alloy steel pipe by alloy family, heat treatment, fabrication control, service, and purchasing requirements.
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API 5L PSL1 vs PSL2 Line Pipe: Requirements and Purchasing Guide
Compare API 5L PSL1 and PSL2 line pipe by grade designation, chemistry control, mechanical properties, testing, traceability, and purchase-order requirements.
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304/304L vs 316/316L Stainless Steel Pipe
Compare 304, 304L, 316, and 316L stainless steel pipe for corrosion environment, fabrication, welding, finish, testing, and purchasing decisions.
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Steel Pipe Mill Test Certificates and Material Traceability
A practical guide to mill test certificates, heat numbers, test results, traceability, inspection records, and document review for steel pipe orders.
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Steel Pipe Dimensions: NPS, OD, Wall Thickness, and Schedule
Learn how NPS, outside diameter, wall thickness, schedule, DN, and length work together when specifying carbon and stainless steel pipe.
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Seamless, ERW, LSAW, and SSAW Steel Pipe Compared
Understand how seamless, ERW, LSAW, and SSAW steel pipe manufacturing routes affect size range, weld configuration, inspection, and typical project use.
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ASTM A53 vs ASTM A106 Steel Pipe: How to Specify the Right Standard
Compare ASTM A53 and ASTM A106 steel pipe by scope, manufacturing route, service conditions, ordering details, and project specification requirements.
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How to Prepare a Complete Steel Pipe RFQ
Learn which standards, grades, dimensions, quantities, tests, documents, coatings, packing details, and delivery terms to include in a steel pipe RFQ.
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