A691 Alloy Steel EFW Pipe
Technique: EFW
Packing: Bundle, or with all kinds of colors PVC or as your requirements
Delivery Time: 7-15-10 days or customized
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of a691 alloy steel efw pipe in China, also supports customized service with low price. Welcome to wholesale discount a691 alloy steel efw pipe for sale here from our factory. Contact us for free sample.
A691 Alloy Electrofusion Welded Pipe is an American Standard electrofusion welded carbon and alloy steel pipe for high temperature and high pressure use.
A691 standard grades:CM-65,CM-70,CM-75,CMSH-70,CMS-75,CMSH-80,1/2CR,1CR,11/4CR,2 1/4CR,3CR,5CR,9CR,91
This standard applies to high-temperature, high-pressure service conditions with steel tubes, from several chemical compositions, strength grades and pressure vessel quality steel plate, with the addition of filler metal electro-melting welding made. Heat treatment may not be required to obtain the desired properties or to comply with the requirements of the application specification.
This standard is generally applicable to tubes and pipes having an outside diameter of not less than 16in (400mm) and up to 3in (75mm) thick.
If the customer has other requirements, please specify them in the contract, and we will supply A691 steel tubes to the customer according to the contract.
ASTM A691 Pipe chemical composition
| 1CR | 1-1/4CR | 2-1/4 CR | 5 CR | 9 CR | 91 | |
| C | 0.05-0.17 | 0.05-0.17 | 0.05-0.15 | 0.15 | 0.15 | 0.08-0.12 |
| Mn | 0.40-0.65 | 0.40-0.65 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 |
| P | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.020 |
| S | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.010 |
| Si | 0.15-0.40 | 0.50-0.80 | 0.50 | 0.50 | 1.00 | 0.20-0.50 |
| Cr | 0.80-1.15 | 1.00-1.50 | 2.00-2.50 | 4.00-6.00 | 8.00-10.00 | 8.00-9.50 |
| Mo | 0.45-0.60 | 0.45-0.65 | 0.90-1.10 | 0.45-0.65 | 0.90-1.10 | 0.85-1.05 |
| V | – | – | – | – | 0.04 | 0.18-0.25 |
ASTM A691 Pipe equivalent
|
Pipe Grade |
Type of Steel |
ASTM Specification |
HB, max |
|
|
Number |
Grade |
|||
| CM-65 | carbon-molybdenum steel | A204/A204M | A | 201 |
| CM-70 | carbon-molybdenum steel | A204/A204M | B | 201 |
| CM-75 | carbon-molybdenum steel | A204/A204M | C | 201 |
| CMSH-70 | carbon-manganese-silicon steel, normalized | A537/A537M | 1 | |
| CMS-75 | carbon-manganese-silicon steel | A299/A299M | - | - |
| CMSH-80 | carbon-manganese-silicon steel, quenched and tempered | A537/A537M | 2 | |
| 1/2 CR | 1/2 % chromium, 1/2 % molybdenum steel | A387/A387M | 2 | 201 |
| 1 CR | 1 % chromium, 1/2 % molybdenum steel | A387/A387M | 12 | 201 |
| 1 1/4 CR | 1 1/4 % chromium, 1/2 % molybdenum steel | A387/A387M | 11 | 201 |
| 2 1/4 CR | 2 1/4 % chromium, 1 % molybdenum steel | A387/A387M | 22 | 201 |
| 3 CR | 3 % chromium, 1 % molybdenum steel | A387/A387M | 21 | 201 |
| 5 CR | 5 % chromium, 1/2 % molybdenum steel | A387/A387M | 5 | 225 |
| 9 CR | 9 % chromium, 1 % molybdenum steel | A387/A387M | 9 | 241 |
| 91 | 9 % chromium, 1 % molybdenum, vanadium, columbium | A387/A387M | 91 | 241 |
Hot Tags: a691 alloy steel efw pipe, China a691 alloy steel efw pipe manufacturers, suppliers, factory, API Welded Pipe, gas industries Steel pipes, Line Pipes, A671 EFW Pipe, ASTM A671 EFW Welded Pipe, A671 ELECTRIC FUSION WELDED PIPES
Send Inquiry
