Huaqiang

PIPE STANDARDS

ASTM A135/A135M

This specification covers two grades of electric resistance-welded steel pipe
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ASTM A106/A106M

Specification for Seamless Carbon Steel Pipe for High-Temperature Servicein NPS 1/8 to NPS 48 inclusive, with nominal (average) wall thickness as given is ANSI B36.10. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification
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ASTM A105/A105M

A105 is American ASTM standard number,”A” stands for common carbon structural steel.
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ASTM A53/A53M

This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26 [DN 6 to DN 650].
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API Spec 5B

API 5B, Specification for Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Threads.This Specification covers dimensions, tolerances and marking requirements for API threads and the gauges that control the acceptance criteria for the threads. Thread element gauges, instruments and requirements for the inspection of threads for line pipe, round thread casing, and buttress casing connections are included.
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API Spec 7-1

API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.
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