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Home >> Stainless Steel Lined Pipe>Super Duplex Steel Lined Pipe

Stainless steel lined pipe adopt to compound stainless steel tube on the inner wall of outer backing pipe. This lined

pipe is greatly improved in water supply, sewage treatment, oil & nature gas transportation in the process of

corrosion resistance, smooth surface, Small fluid resistance; and retain the high mechanical strength of steel pipe,

pipeline was connected by welding, groove, thread connection, good sealing, it overcomes the easy corrosion to steel

pipe, the defects of easy leakage and aging of plastic pipes with hot melt connection, It is an ideal product for the

upgrading of gas, water and oil pipeline.


Application:

●Oil & Gas transportation pipeline

●Power Plant pipeline

● Paper and Pulp industry

● Pharmacy & Medical

●Water supply pipeline

● Food & Beverage pipeline


Specification:

● Outer Diameter(mm): 20~1420

● Wall thickness(mm): Outer backing pipe 2.5~50; Liner steel pipe 0.2~6

● Composite Standard: API-5LD; DNV-OS-F101; DEP 31.40.20.32; CJ/T192;

● Packing: In bulk or according to customers’ requirements.


The gripping force(σy) between the lining and the backing steel

Thicknessofthelining /mm

The gripping force(σy) /MPaG

Remark

≥3.0

≥150


2.0~3.0

≥90


1.0~2.0

≥60


<1.0

——

Untested

One of the indirect methods to measure the interface bond strength is the interlaminar shear strength test.

Shear Strength of Total Cross Section

D≤600 mm

P=F/(πDH)=F/(πD(H1-H2)),H is about 30 or 50 mm

Diameter

D

Shear Strength of Total Cross Section

P

Remark

mm

323.9~559

≥1.0 MPa

Thickness of the lining shall be a minimum of 1.0mm


inch

12.75~22.00

≥145 psi


mm

168.3~323.9

≥2.0 MPa


inch

6.625~12.75

≥290 psi


mm

≤168.3

≥3.0MPa


inch

≤6.625'

≥435 psi


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