Line Pipe for Sour Service

Line Pipe for Sour Service


Negotiable Min Order Quantity Unit

Required Quantity
Place of Origin
China
Brand name
Sunny Steel
Payment Terms
D/P,L/C,T/T
Production method
Negotiable
Shipping / Lead Time
Negotiable / Negotiable
Keyword
api pipes, api 5ct k55, api 5ct n80, line pipe for sour service
Category
Cast & Forged

China Alloy pipe Manufactory Ltd.

Membership
BIZ
Country / Year Established
China China / 2000
Business type
Manufacturer
Verified Certificate

13

Product name Line Pipe for Sour Service Certification -
Category Cast & Forged Ingredients -
Keyword api pipes , api 5ct k55 , api 5ct n80 , line pipe for sour service Unit Size -
Brand name Sunny Steel Unit Weigh -
origin China Stock -
Supply type - HS code 7305

Product Information

 

The line pipes can be used for a wide range of petrol and gas transportation under sour service environment.
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Standards:

  • GB/T9711.3
  • API5l/ISO3183-2007

Application:

  • For petrol and gas transportation under sour service environment.

Sizes range

  • 1/4 inch Nominal to 24 inchO.D.
  • Wall Thickness-Schedule 10 through XXH

Line Pipe Steels Used in Sour Service

Line pipe steels used in sour service are prone to hydrogen-induced cracking (HIC) depending on metallurgical and environmental factors.
The metallurgical factors consist of alloying elements, microstructure, strength, segregation, and shape of non-metallic inclusions. Some environmental factors which influence HIC, also known as stepwise cracking (SWC), are the partial pressures of hydrogen sulfide (H2S) and carbon dioxide, temperature, pH of the medium, and aggressive ions, such as chloride. Many failures of sour gas line pipes have occurred around the world as a result of HIC.

Considerable effort has been expended by steel line pipe producers, users, and research organizations to understand the HIC mechanism, to develop a laboratory test method to identify and quantify material susceptibility to HIC, and to produce steels with greater HIC resistance. NACE International has developed a standard test, TM-02-84, for line pipe steels.

The method describes procedures for evaluating the resistance of pipeline steels to SWC induced by H absorption from aqueous sulfide corrosion. The test is applicable to line pipe with wall thicknesses of 5 mm to 30 mm. The procedure consists of exposing unstressed coupons to synthetic seawater saturated with H2S at ambient temperature and pressure at a pH in the range 4.8 to 5.4 for 96 h. The samples are sectioned, polished metallographically, and etched, if necessary, so that cracks can be distinguished from small inclusions, laminations, scratches, or discontinuities. Crack sensitivity ratio (CSR), crack length ratio (CLR), and crack thickness ratio (CTR) are calculated for each section. The average is determined for each coupon. In recent work by Canada’s Centre for Mineral and Energy

Technology in collaboration with the Canadian Standards Association (CSA) Sour Service Task Force, two parameters were determined experimentally for each of 19 line pipe steels:
(1) threshold H concentration (CthH) or the concentration of diffusible H in the steel above which cracking occurs and
(2) threshold pH (pHth) or the pH below which cracking occurs.

 

B2B Trade

Price (FOB) Negotiable transportation -
MOQ Negotiable Leadtime Negotiable
Payment Options D/P,L/C,T/T Shipping time Negotiable

China Alloy pipe Manufactory Ltd.

Country / Year Established
China China / 2000
Membership
BIZ
Business type
Manufacturer

13

President
Sum Xu
Address
No. 273, Siping Road, Shanghai, 200081, China
Product Category
Pipe Fittings,Steel Pipes
Year Established
2000
No. of Total Employees
501-1000
Company introduction

 

Sunny Steel Enterprise Ltd., with strong support of our customers from around the world, we are a professional supplier in steel pipe and pipe fitting. 

 

We provide our customer with mainly steel pipe include Welded pipe, Seamless tubes, Alloy tube, Stainless pipes, and Abrasion resistant pipe. 

 

The fittings include Weldable Components, Forged Fittings, Valves, Flange and Accessories etc.

 

Main Markets

Germany Germany

Luxembourg Luxembourg

Main Product

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