API 5L X65 is a standard specified for gas, oil and water pipes by the American Petroleum Institute. These are high yield pipes meant for transportation of liquids over distance pipe lines. They have the minimum yield strength of 65000PSI and the minimum tensile strength of 77000PSI. This carbon steel has two different product specifications. The PSL1 and PSL2 could be used interchangeably but the API 5L X65 PSL2 has some higher mechanical properties compared to PSL1. The API 5L X65 PSL1 is the most commonly used product specification level of API 5L Grade X65. The nominal bore size differs from 3/8 inches to 30 inches and the other dimensions vary according to the schedules. The API 5L X65 Grade B comes in beveled, coupling and in plain end forms. The HIC Tested X65 is tested for hydrogen embrittlement and could be used under cryogenic conditions and with hydrogen gas rich environments. The ISO 3183 L450 is a certification of these pipes. The API 5L X65 Sour Service pipes high corrosion resistance. The API 5L X65 Nace conforms to corrosion resistance standards. It can come in NACE specifications MR0175, TM0177 and TM0284 as well. The wall thickness of the pipes can vary up to 250mm depending on the various schedules up from 20 and up to XXS and higher.
Table of contents
- X65 Seamless Line Pipe Standard Specification
- Most commonly used API 5L X65 PSL1/2 Pipe Types
- In X65M PSL2 what is the meaning of "M"?
- In X65Q PSL2 why mark "Q" on Line Pipe?
- "N" indicate for which condition in X65N PSL2 Pipe
- USC Unit applicable for X65 Pipeline?
- PSL2 X65 PSL2 is Repairable?
- X65 Sour Service Line Pipes External & Internal Coating
- Grade X65 Pipe Equivalent Standard
- API 5L X65 PSL2 Pipe Chemical Properties
- X65 Carbon Steel Pipe Mechanical Specification
- X65 Steel Pipe Temperature Range
- API 5L X65 Pipe Allowable Pressure Rating
- API 5L X65 PSL2 Pipeline Uses and Applications
2" to 24" O.D.
Schedule 10 to 160, STD, XS, XXS
|Standard and Dimensions|
|Trade Name||API SPEC 5L ISO 3183 PSL1 / PSL2 X65, ASTM A106/ A53/ A333 Grade 6/ API 5L GR.B X65|
|Standard Specification||API 5CT, ASTM A333/A333M, ASTM A139, GB/T3091, ASTM, GB9948, GB/T14975, ASTM A53/A53M, ASTM A106/A106M, EN10296, ANSI/API GB13296-91, ASME B36.10, 5L, GB/T9711 ISO3183, GB/T14976|
|API PSL Level||
|Pipe End Finish||
|Production Process||SAWL, LW, HFW, SAWH, LFW, SMLS|
|Testing||H2 SERVICE, DWT, CVN impact, HIC, TM0177, NACE MR0175, TM0284, IBR, Hardness, SSC|
|Material Origins||Indian, Korean, US, European, Ukraine, Japanese, Russian|
|Mill Test Certificate (MTC)||EN 10204/3.1B|
Sour Service Line Pipes, Hsaw / Fluid Pipe
Seamless Line Pipe, Piling, Saw / Dsaw/ Sawh Pipe
Welded Steel Line Pipe, High Yield Pipe, Steel Pipeline
|X65M||"M" letter means||Thermomechanical rolled or thermomechanical formed|
|X65Q||"Q" letter means||Quenched and tempered eg API 5L X65QS|
|X65N||"N" letter means||normalized or normalized and tempered, Normalizing rolled, normalizing formed|
ISO 3183 L450 Pipe / L450Q / L450M / L450N
X65 PSL2 Linepipe shall not repair by welding, but as per agreement PSL1 Pipe may be repair by welding.
|X65 PSL2||L450Q / X65Q
L450M / X65M
|C max||Mn max||P||S max||V max||Nb max||Ti max|
|API||Yield Stress Mpa||Tensile Stress Mpa||Raito||Elongation|
|with epoxy coating||Temperature|
|450 Mpa||65300 Psi|