A691 3CR Alloy Steel Round Pipe
GNEE manufactures and supplies A691 3CR High Pressure Pipe, you can search for any size and grade of steel seamless pipe to compare prices.
A691 3CR grade round steel pipe is manufactured by electric fusion welding, as a type of chrome alloy pipe, it contains 3% chromium and 1% molybdenum. Therefore A691 3CR round welded pipe can withstand extreme temperatures and has strong resistance to stress corrosion cracking. It also has excellent erosion resistance to severe chemical processing systems.
A691 3CR welded chrome molybdenum pipe properties make it useful for high temperature applications for pressure purposes such as petroleum, chemical, steam boiler and superheater piping.
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ASTM A691 Grade 3 CR Pipes Specification:
| Type |
ASTM A691 GRADE 3 CR Alloy Steel Pipes |
|---|---|
| Standard | ASTM A691 / ASME SA691 |
| Schedule | SCH 5, SCH 10, SCH 40, SCH 80 SCH 160 |
| Size Range | 16" to 100" |
A691 GR 3Cr pipe Chemical Analysis:
|
Designation |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
|
ASTM A691 3Cr |
0.15 |
0.3-0.6 |
0.035 |
0.035 |
0.5 |
2.75 - 3.25 |
0.9 - 1.1 |
A691 3CR Alloy round steel tube

Advantages of GNEE
GNEE pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
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FAQ
Q: What product information do I need to provide?
A: You need to provide grade, wall thickness, width and quantity you need to buy.
Q: What are the shipping ports?
A: You can choose other ports according to your needs.
Q: About the product price?
A: Due to the cyclical changes in raw material prices, prices vary from period to period.
Q: What certifications do your products have?
A: We have ISO 9001, SGS, EWC and other certifications.
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