API 5L X70 pipes come in different product specification levels. PSL1 and PSL2 are used in different applications. The PSL1 is the most commonly used while PSL2 has special characters. Both types could be produced in seamless and welded conditions. The seamless pipes have maximum carbon at 0.18% where the welded pipes have 0.12%. Both types have manganese at 0.45%, phosphorous at 0.025% and 0.015% sulfur maximum. The API 5L X70 PSL2 and the API 5L X70 PSL1 specifications both has a minimum yield strength 485MPa and minimum tensile strength of 570MPa. The API 5L Grade X70 pipe ranges from 3/8 inches to 30 inches in diameter with plain, beveled and threaded ends. There is no minimum welder frequency required for this pipe. The API 5L X70 Grade B can be purchased as rolled, normalizing rolled or thermodynamically rolled. There are different coatings such as color painting, 3LPE coating or epoxy coating. There are different testing methods such as the HIC Tested X70 which has to pass the hydrogen embrittlement test. The other certifications like the ISO 3183 L485 Grade X70 are available to specify certain standards. Both the seamless and welded pipes are used in fluid transfer applications, typically in petrochemical, natural gas and power generation applications.
Table of contents
- API 5L X70 PSL2 Pipe Material Specification
- Most Common types of API 5L X70 PSL1/2 Pipe
- What "M" indicate in X70M PSL2?
- "Q" is applicable for which condition in X70Q PSL2 Pipes?
- For which delivery condition manufacturers mark "N" on X70N PSL2 Line Pipe?
- What is X70 Pipeline USC Unit?
- In X70 PSL 1 or PSL2 which can be repair by welding?
- Grade X70 Sour Service Line Pipes Coating Standards
- X70 Carbon Steel Pipe Equivalent Material Grade
- Grade X70 Pipelines Chemical and Physical Properties
- X70 Mechanical Properties Table
- Grade B X70 High Yield Pipe Temperature Limit
- X70 PSL2 Fluid Pipe Maximum Allowable Pressure Rating
- Applications and Uses of API 5L X70 Pipe
2" to 24" O.D.
Schedule 10 to 160, STD, XS, XXS
|Standard and Dimensions|
|Trade Name||API SPEC 5L ISO 3183 PSL1 / PSL2 X70, ASTM A106/ A53/ A333 Grade 6/ API 5L GR.B X70|
|Line Pipe Standards||GB9948, GB/T14976, GB/T9711 5L, ISO3183, ASTM A53/A53M, GB/T14975, ANSI/API ASTM, EN10296, ASME B36.10, ASTM A139, ASTM A106/A106M, GB/T3091, ASTM A333/A333M, GB13296-91, API 5CT|
|Manufactured Process||SAWH, SAWL, HFW, LW, SMLS, LFW|
|Tests are normally carried out||CVN impact, TM0177, H2 SERVICE, Hardness, SSC, DWT, TM0284, IBR, NACE MR0175, HIC|
|Equivalent Material Grade||
|Material Origins||Indian, Ukraine, US, Russian, Korean, Japanese, European|
|Mill Test Certificate (MTC)||EN 10204/3.1B|
Welded Steel Line Pipe Dsaw / High Yield Sour Service Pipeline
Hsaw Pipe, Steel Piles, Seamless Line Pipe
Welded Steel Pipes, Sawh / Saw / Helical Steel Pipes
|X70M||"M" letter means||Thermomechanical rolled or thermomechanical formed|
|X70Q||"Q" letter means||Quenched and tempered|
|X70N||"N" letter means||normalized or normalized and tempered, Normalizing rolled, normalizing formed|
ISO 3183 L485 / L485Q / L485N/ L485M
X70 PSL2 not suitable to repair by welding but defects of PSL1 Pipe can be repair as per agreement.
|X70 PSL2||L485Q / X70Q
L485M / X70M
|Gr. X70 PSL 1|
|API||C max||Mn max||P||S max||V max||Nb max||Ti max|
|Grade X70Q PSL 2|
|Gr.||Mpa Yield Stress||Mpa Tensile Stress||Raito||Elongation|
|Hot-coated Grade with epoxy powder||Temperature|
|635 Mpa||92100 Psi|