Project Description
Acid Service Line Pipe
Detailed Product Description
Line pipes are primarily used for transporting oil and natural gas, commonly found in industries such as petroleum, natural gas, chemical, and power equipment. With the increasing proportion of sulfur-containing oil and gas wells in domestic and international oilfields, the pipeline environment from extraction to desulfurization stations contains large amounts of sulfides, which imposes higher requirements on the performance of the pipeline. Acid service line pipes are the preferred products for these environments. These products cover all steel grades specified by API 5L standards, meeting different strength requirements and providing satisfactory pre-sales and after-sales services to customers.
Main Grades or Steel Grades:
PSL1 Steel Pipe Tensile Performance Requirements
| Steel Pipe Grade | Seamless Steel Pipe |
|---|---|
| Yield Strength Rt0.5 (MPa) | Tensile Strength Rm (MPa) |
| L175 or A25 | ≥175 |
| L175P or A25P | ≥175 |
| L210 or A | ≥210 |
| L245R or BR | ≥245 |
| L290R or X42R | ≥290 |
| L320 or X46 | ≥320 |
| L360 or X52 | ≥360 |
| L390 or X56 | ≥390 |
| L415 or X60 | ≥415 |
| L450 or X65 | ≥450 |
| L485 or X70 | ≥485 |
PSL2 Steel Pipe Tensile Performance Requirements
| Steel Pipe Grade | Seamless Steel Pipe |
|---|---|
| Yield Strength Rt0.5 (MPa) | Tensile Strength Rm (MPa) |
| L245R or BR | 245~450 |
| L245N or BN | 245~450 |
| L245Q or BQ | 245~450 |
| L290R or X42R | 290~495 |
| L290N or X42N | 290~495 |
| L290Q or X42Q | 290~495 |
| L320N or X46N | 320~525 |
| L320Q or X46Q | 320~525 |
| L360N or X52N | 360~530 |
| L360Q or X52Q | 360~530 |
| L390N or X56N | 390~545 |
| L390Q or X56Q | 390~545 |
| L415N or X60N | 415~565 |
| L415Q or X60Q | 415~565 |
| L450Q or X65Q | 450~600 |
| L485Q or X70Q | 485~635 |
| L555Q or X80Q | 555~705 |
Main Grades or Steel Grades for Products Used in Acidic Environments:
- BNS/X42NS/X46NS/X52NS
- BQS/42QS/46QS/52QS/56QS/X60S/65QS/70QS
Compliance Standards
- GB/T9711-2011 “Steel Pipe for Oil and Gas Industry Pipeline Systems”;
- API SPEC 5L “Specification for Line Pipe”
Features of Acid Service Products
Acid service line pipes use low-sulfur, high-purity steel with calcium treatment. The company uses CPE or Assel rolling processes for seamless steel pipes, strictly controlling product dimensions throughout the process. After heat treatment, the product performance fully meets the performance indicators specified by API 5L standards and has its own HIC and SSC laboratories. In addition to standard testing, random sampling tests are also conducted to ensure the corrosion resistance of the products before they leave the factory.
Application Environment
Acid service line pipes are primarily designed for the acidic environments encountered during oil and gas exploration and development. They address issues related to ordinary transportation materials that lack sufficient resistance to sulfur stress cracking and hydrogen-induced cracking in acidic environments. Typically suitable for environments close to surface temperature with CO2 partial pressure less than 0.2 MPa and H2S partial pressure greater than 0.0003 MPa.
Product Specifications Range
Outer Diameter: Φ17.1mm ~ Φ219.1mm; Wall Thickness: 2.3mm ~ 40.0mm.