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Anti-Corrosion 3PE Coated API 5L PSL1 X56/K56 Spiral Welded Steel Pipe
Detailed Specifications & Characteristics
The Anti-Corrosion 3PE Coated API 5L PSL1 X56/K56 Spiral Welded Steel Pipe from YTDR Group represents the pinnacle of durability and performance for demanding pipeline applications. This pipe is manufactured through advanced spiral welding technology from high-grade API 5L PSL1 X56/K56 steel, ensuring excellent structural integrity and pressure-bearing capacity.
The core innovation lies in its 3-layer Polyethylene (3PE) coating system, a significant upgrade over traditional single-layer FBE or 2-layer coatings. This system consists of:
● Layer 1: Fusion-Bonded Epoxy (FBE) for superior adhesion and cathodic disbonding resistance.
● Layer 2: Copolymer Adhesive for bonding the FBE to the outer layer.
● Layer 3: High-Density Polyethylene (HDPE) extruded sheath, providing a tough, seamless barrier against mechanical damage, moisture, and chemicals.
This synergistic combination offers an unmatched shield, making it ideal for underground, underwater, and harsh environments.
Key Specifications & Standards:
● Standard: API 5L PSL1, ISO 9001, ISO 21809-1
● Grade: X56 / K56 (or equivalent to L415)
● Diameter Range: 219mm to 2020mm (customizable)
● Wall Thickness: 5mm to 25mm
● 3PE Coating Thickness: Typically 2.5mm to 4mm, customizable as per DIN 30670/EN 10290 standards.
Why Choose YTDR’s 3PE Coated Steel Pipe?
1.Proven Manufacturing Expertise: With over 15 years of specialized experience in steel pipe production and anti-corrosion treatment, YTDR possesses deep technical knowledge. Our single Ф4020 spiral pipe production line in Tianjin is dedicated to precision and quality.
2.Integrated Quality Control: We implement a "Zero-Defect" outgoing inspection policy, with every pipe undergoing 3 rounds of rigorous testing (dimensional, hydrostatic, coating holiday detection). Our defect rate remains below 0.2%.
3.Superior Coating Technology: Our 3PE process ensures a uniform, pinhole-free coating with exceptional adhesion strength, preventing underfilm corrosion—a common failure point in inferior coatings.
4.Cost-Effectiveness & Value: While the initial investment might be higher, our pipes significantly reduce the Total Cost of Ownership (TCO) by 15-20% over their lifecycle, thanks to minimal maintenance and replacement needs.
5.Responsive Service & Global Reach: We have served 500+ clients worldwide. Our team provides customized solutions, offers competitive quotes within 24 hours, and ensures seamless logistics support.
Free Samples For You
At Yuantai Derun, we take pride in delivering premium square steel pipes. To let you experience our excellence firsthand, we’re pleased to provide free samples (up to 20 cm in length), shipped directly to you via express air freight—with only the shipping cost on your end.
Why hesitate? Put our materials to the test and discover why Yuantai Derun stands out in quality and reliability. Request your sample today!
Normal Processing
Production process: winding → cone clamping → shovel dismantling → pinch leveling → electric vertical roll alignment → shearing butt welding machine head and tail → electric vertical roll alignment → edge milling machine milling bevel → strip surface cleaning → manual vertical roll alignment → conveyor feeding → guide plate feeding → forming vertical roll positioning → forming machine coil forming → internal weld welding → outer weld welding → cut-to-length pipe cutting → pipe dropping
Spiral welded pipe mobile X-ray flaw detector
The quality control of spiral welded pipes is very important in the production of products, and afteryears of unremitting efforts, a series of efficient quality control solutions for different longitudinalseam and spiral welded pipe products have been summarized. Among them, the 225kv seriesdetection system is a real-time imaging detection system specially designed for the quality controlof the production process of special pipe fittings. Intuitive real-time inspection of defects in weldmanufacturing, such as cracks, porosity, slag inclusions, etc.
Operation process: The high-voltage generator is controlled by the control console to generate30-225KV DC high voltage and AC filament voltage, which is transmitted to the X-ray tube(1-3.5mA when using a small focus, 1-8mA when using a large focus) through a high-voltagecable, and the electronically bombardment of the anode tungsten target generates X-rays torealize the steel tube inspection
1. The powder supply center integrates several functions of fluidization, powder supply, powder return, vibrating screen and spray gun cleaning, which occupies less space, less environmental pollution, and is convenient to operate.
2. The barrel has been the continuation of the American Barton technology, forced extrusion structure, unique rifling design, with high-efficiency screw can be efficiently extruded. On the basis of Japanese technology, the screw absorbs the German Reifenhauser technology and has been improved many times, with special special, double-wave high-efficiency mixing type, excellent plasticizing effect, large extrusion capacity, stable extrusion, and excellent mixing effect, which is more suitable for the mixing and extrusion of various materials.
3. The barrel and screw are made of 38CrMoAIA high-quality alloy steel produced by well-known domestic special steel plants, normalizing, annealing, quenching and tempering, and adding our company's unique grooving and welding cemented carbide and other heat treatment processes, all CNC machine tool processing, nitriding hardness up to HV950-1100, the whole production process and quality are carried out within a controlled range, so as to effectively avoid the problem of poor processing and quality control.
The water is pumped from the reservoir through a high-pressure water pump, and then dispersed to each water nozzle through the water pipe, which can not only achieve a large water flow rate, fast curing, but also not easy to form water droplets on the surface of the anti-corrosion coating. The surface coating of the produced anti-corrosion steel pipe is quickly cured and the anti-corrosion coating is quickly formed.
Yuantai Derun Square Steel Pipes – Quality Assured at Every Stage
From raw material sourcing to finished products, Yuantai Derun implements rigorous quality control at every step. We exclusively use traceable raw materials from reputable manufacturers, subjecting them to comprehensive inspections, including but not limited to:
●Dimensional & Visual Checks (appearance, size, straightness)
●Mechanical Testing (impact resistance, yield & tensile strength, hardness)
●Material Analysis (chemical composition, metallographic examination)
●Non-Destructive & Corrosion Testing (UT inspection, salt spray testing)
Contact us today to discuss your specific testing requirements—we ensure precision and reliability in every pipe.
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Product Description |
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Outer Diameter |
219mm to 4500mm |
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Wall Thickness |
4-30 mm |
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Length |
4-24M according to client requirement |
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Tolerance |
±5% or as required |
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Brand |
Yuantai Derun Steel Pipe Manufacturing Group |
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Model |
3PP coating steel pipe |
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Surface Treatment |
Black painted or REQUEST |
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Standards |
API 5L, ASTM A501/500, bs,EN10210/10219,JIS G3466 |
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Certificate |
CE,LEED,BV,PHD&EPD,BC1,EN10210/10219, ISO9000/14001/45001,DNV,ABS,JIS G3466 |
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Brand |
Yuantai Derun or OEM |
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MOQ |
2-5 Tons or No minimum order |
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Delivery Time |
7-30 days |
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Samples |
Free Samples Get Free Sample Now! |