At Jiangsu CunRui Metal Products Co., Ltd., we make top-notch pipeline steel pipes that are super important for today's energy and industrial stuff. Our main product is the API 5L line pipe, made to handle transporting oil, gas, and other liquids across long distances. It sticks to the API 5L standard (from the American Petroleum Institute), which says what's needed for steel pipes used in pipelines.
Basically, these pipes are made from strong carbon steel or fancy micro-alloyed steel. We add stuff like niobium, vanadium, and titanium, and use special rolling and heat to get a material that's strong, tough, and easy to weld. We make both API 5L seamless pipes and HFW/SAW pipes to fit different pressures, sizes, and project needs. Whether it's for an oil pipeline across the country or a gas project out at sea, our pipes are made to be strong, safe, and last a long time.
Product Details
Specifications & Technical Parameters
Parameter Category |
Specification |
| Manufacturing Process | Seamless (SMLS), High-Frequency Welded (HFW), Submerged Arc Welded (SAW – LSAW / HSAW) |
| Standard & Grades | API 5L PSL1 & PSL2. Grades: Gr. B, X42, X46, X52, X56, X60, X65, X70, X80. Also compliant with related ASTM, EN, and DIN standards. |
| Size Range | Seamless: OD: 1/2" to 24" (10.3mm – 610mm), WT: SCH20 to XXS. Welded: OD: 6" to 120" (168mm – 3000mm+), WT: Up to 4" (100mm+). Lengths: Random, double random, or cut to length. |
| Key Chemical Elements (Example for X65 PSL2) | C, Mn, Si, P, S, Nb, V, Ti, with strict control on CE(Pcm) for weldability. |
| Key Mechanical Properties (Example for X65 PSL2) |
Yield Strength: 65,000 psi (450 MPa) Min, Tensile Strength: 77,000 – 110,000 psi (530-760 MPa), Elongation: As per standard. Impact Test: Required at specified temperatures. |
Features & Advantages
Excellent strength and toughness
We use top-notch metal tech, so our Grade B to Series X stuff is strong and doesn't break easily. It stays tough even when it's super cold, which stops cracks from spreading in places like freezing weather or deep underwater.
Accurate size and excellent surface
Our production and inspection setup makes sure our pipes have really tight tolerances for wall thickness, outer diameter, and straightness. The pipes have good insides and outsides which helps cut down on fluid turbulence. It also saves you time prepping for coating or other work you need to do later.
Reliable anti-corrosion foundation
Even though it's not stainless steel, the pure steel and how cleanly it's made give a great base for coatings that fight rust on the outside (like FBE and 3LPE) and linings inside. Together, they help the pipeline last a long time, even when things get corrosive.
Our Services
Beyond supplying standard products, we focus on providing solutions that fit your specific project landscape.
Project-Specific Customization
We can adjust chemical composition within grade limits to optimize for specific environmental challenges or welding procedures.
Comprehensive Pre-Delivery Processing
We offer a range of value-added services including precision cutting, beveling ends to match your weld prep design, hydrostatic testing, and non-destructive testing (UT, RT) as per your specification.
Tailored Co-ordination & Packaging
We work with you to determine the most efficient bundling, protective coating (varnish, temporary rust preventive), and marking scheme to ensure pipes arrive on site in perfect condition and ready for installation.
Applications
Oil and Gas Transmission
Petrochemical and Chemical Plants
Water and Pipeline Infrastructure
FAQ
Q: What is the difference between PSL1 and PSL2?
A: The PSL2 standard is higher and more stringent in terms of requirements (composition, toughness, testing), and is applicable to critical projects such as high-pressure and offshore pipelines.
Q: Can a test certificate be provided?
A: Provide complete factory test certificates to ensure product traceability and compliance with standard requirements.
Q: Seamless pipe or welded pipe?
A: According to the pressure, caliber and cost. We provide professional advice, seamless pipes are suitable for high pressure and small caliber, and welded pipes are economical and efficient and suitable for large caliber.
Q: How long is the delivery date?
A: Regular products take 30-45 days, depending on specifications and quantity, and provide various international trade terms.
Q: Do you support other standards?
A: Yes, it can be produced according to international standards such as ISO, DIN, EN and ASTM. Please provide specific specifications.
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