Chrome Moly Alloy Welded Pipe

P91, P22, P5, P11, P9, P92 ( ASTM A691 & ASME SA691 )  Alloy Welded Pipe

U.S. Metals is a Premier Worldwide Supplier for All Your Chrome Moly Alloy A691 / SA691 Welded Piping Needs.

Prohibit corrosion and tolerate high temperatures with high-quality chrome moly alloy welded pipe from U.S. Metals.  

A specialty metals supplier with an industry-leading selection of chrome moly welded pipe, U.S. Metals can deliver quality products that meet any industry standard or customer requirement. We source materials from top mills, which combined with our full suite of on-site value-added services, enable us to meet customer expectations on time and at a competitive price.  

We carry chrome moly alloy welded pipe in a range of sizes,lengths, and thicknesses, which enables us to meet the needs of a wide array of industries including oil & gas, power generation and chemical processing.  

Chrome moly alloy welded pipe is manufactured from plate that is roll formed and welded.  In most cases, welded chrome moly alloy pipe is less expensive than chrome moly alloy seamless pipe, and it’s readily available in long continuous lengths. U.S.Metals can fulfill all orders, including 24/7 emergency requests. Our inventory includes the following grades: P11, P22, P5 , P9, P91 Type 1 & 2.

Chrome Moly Alloy Welded Pipe Characteristics

Chrome moly alloy welded pipe is a tubular product with enhanced levels of chromium and molybdenum. The added chromium helps increase the steel’s hardenability and corrosion resistance, whereas the improved molybdenum helps bolster its toughness and corrosion resistance. Additional characteristics of chrome moly welded pipe include:

Chrome moly alloy welded pipe is a tubular product with enhanced levels of chromium and molybdenum. The added chromium helps increase the steel’s hardenability and corrosion resistance, whereas the improved molybdenum helps bolster its toughness and corrosion resistance. Additional characteristics of chrome moly welded pipe include:

  • Strong creep strength
  • Improved rigidity
  • Superior hardenability
  • Robust wear resistance
  • Good impact resistance
  • Easy to fabricate

Improve your operation by teaming up with U.S. Metals for your chrome moly alloy welded pipe needs. From custom orders to quick turnarounds, we’re here for you.

Contact us for more information about chrome moly alloy welded pipe.



  • Trade Name 
    Grade
    Welded Pipe
    1 1/4 Chrome 
    1 1/4CR
    A691 / SA691
    2 1/4 Chrome 
    2 1/4CR
    A691 / SA691
    5 Chrome 
    5CR
    A691 / SA691
    9 Chrome 
    9CR
    A691 / SA691
    P91
    91
    A691 / SA691

    Materials in industry standard designations: STD, 40, XH, 60, 80, 100, 120, 140, 160, XXH
    Special customer designated nominal and minimum wall thicknesses can also be furnished.
    Non standard OD & ID are available.

    Pipe manufactured to this specification is normally furnished in outside diameters 16 inch and larger with wall thicknesses up to and including 3 inches.

    Pipe having other size and wall thickness dimensions are permitted provided all other requirements of this specification are met. Manufacturer's acceptance of special dimensions would have to be obtained prior to placement of an order.
  • This specification covers electric-fusion-welded alloy-steel pipe intended for high pressure at high-temperature service fabricated from pressure-quality plate.
Orders for material under this specification should include the following, as required, to describe the desired material adequately:

  • Quantity (feet, metres, or number of lengths)
  • Name of material (seamless alloy steel pipe)
  • Grade
  • Manufacture (hot-finished or cold-drawn)
  • Size using one of the following:
    • NPS and schedule number
    • Outside diameter and nominal wall thickness
    • Outside diameter and minimum wall thickness
    • Inside diameter and nominal wall thickness
    • Inside diameter and minimum wall thickness
  • Length (specific or random)
  • End finish (Ends Section of Specification A999/A999M)
  • Optional requirements (Section 8, 12 and 13 of this specification. See the Sections on Hydrostatic Test Requirements and Permissible Variation in Weight for Seamless Pipe in Specification A999/A999M)
  • Specification designation
  • Special requirements or any supplementary requirements selected, or both.

Information provided in this page is in accordance with the 2013 Edition of the ANNUAL BOOK OF ASTM STANDARDS.
Refer to ASME B & PV Section II for non-identical A/SA requirements