A691 CMSH80 Alloy Steel Welded Pipe
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A691 CMSH80 Alloy Steel Welded Pipe

A691 CMSH80 alloy welded pipe is a carbon-manganese-silicon alloy electric fusion welded steel pipe for high temperature and high pressure use that conforms to ASTM A691 standard.
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Product Introduction

A691 CMSH80 Alloy Steel Pipe Description

 

A691 CMSH80 alloy welded pipe in the A691 is the American Society for Testing and Materials (ASTM) standard of a grade, belongs to the high temperature and high pressure with electric welded carbon and alloy steel pipe.

Manufacturing standards and processes
‌Implementation specifications‌: ASTM A691 standard, incorporated into ASME SA-691 pressure vessel application specifications;
‌Forming process‌: JCOE/UOE cold forming + finishing straightening to ensure geometric accuracy;
‌Thickness range‌: Can produce extra-thick pipes with a wall thickness of ≤190mm, breaking the dependence on imports.

 

 

A691 CMSH80 EFW Steel Pipe for high pressure specification

 

Features Technical Parameters
Alloy system carbon-manganese-silicon-steel
‌Intensity Level "H80" suffix indicates minimum yield strength 80 ksi (≥550 MPa)
Heat treatment Normalizing + tempering (910~940℃ temperature control) to eliminate welding stress and optimize high temperature performance
Testing requirements 100% ultrasonic flaw detection + water pressure test to ensure high pressure sealing

 

Class designations are as follows

product-387-305

Plate Materials

product-800-278

Heat treatment parameters

product-800-351

 

 
applications of A691 CMSH80 alloy steel EFW pipe 
 
A691 CMSH80 Alloy Stee Pipe
LNG pipeline
A691 CMSH80 Alloy Stee Pipe
power station
A691 CMSH80 Alloy Stee Pipe
Chemical Equipment

 

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