Product name | Plastic Coated Steel Pipe |
Standard | GB/T 3091, GB/T 13793, ASTM A252, ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L,DIN 1626/1615, DIN 17120, etc. |
Grade | SS400, Q235, Q345, Q460, A572 Gr.50, Gr.1/Gr.2/Gr.3, S235, S275, S355, Grade A/B, X42, X52, X60, X70, etc. |
Surface | Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment) |
Inspection | With Chemical Composition and Mechanical Properties Analysis; Dimensional and Visual Inspection, also with Nondestructive Inspection. |
Application | structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering,mechanical industry, municipal projects, roads and its auxiliary facilities |
Packing | Standard export, in bulk / bundles / nylon fabric bags with seaworthy packing; or according to customers' requestments. |
Size | 1/2"-28"(DN15-DN700)/21.3mm-711mm |
Wall Thickness | SCH5/SCH10/SCH40/SCH80/SCH160/XXS 1.65mm-30.75mm |
Material | Carbon steel: ASTM A106 GR.A/GR.B/GR.C API 5L GR.A/GR.B/X42/X52/X60/X65/X70/X80 A519 GR.1008-GR.1541 DIN2391 ST35/ST45/ST52 DIN1329 ST37/ST44 BS 6323 LW12b/LW19b JIS-G3444 STK400/STK490/STK500/STK540 |
Alloy steel: ASTM/ASME A335-P1,A369-FP1 A250-T1,A209-T1 A335-P2,A369-FP2 A213-T2,A335-P12,A369-FP12,A213-T12,A335-P11,A369-FP12,A199-T11,A213-T11,A335-P22,A369-FP22,A199-T22,A213-T22,A335-P5,A389-FP5,A213-T5,A335-P9,A369-FP9,A199-T9,A213-T9 | |
Stainless steel: ASTM A269TP304/TP304L/TP316/TP316L/TP316LN/T321/TP317 ASTM A312 TP201/TP304/TP304L/TP310S/TP310H/TP316/TP316L ASTM A213 TP201/TP304H/TP304L/TP310S/TP321H/TP316/TP347 904L ASTM A270,ASTM A789,ASTM A268,ASTM A790,ASTM A791,ASTM A803,ASTM A813,JIS DIN,BS, | |
Surface Treatment | Carbon steel: Brush black paint galvanize(hot/cold),3PE Anticorrosive |
Alloy steel: Brush black paint galvanize(hot/cold),3PE Anticorrosive | |
Stainless steel: Annealed and pickled/Brihgt Annealing Or Polish | |
Application Fields | Chemical Industry /Petroleum Industry /Power Industry/Metallurgical Industry Building Industry /Ship-building Industry |
Packing | nuded cargo or nylon bags or according to the customers' requirements |
Product structure
1. Base steel pipe: High-quality welded steel pipe or seamless steel pipe that complies with standards such as GB/T 3091 and GB/T 8163 shall be adopted
2. Transition layer: Epoxy resin primer, enhancing adhesion
3. Anti-corrosion coating
Inner coating: Food-grade epoxy resin (EP) or polyethylene (PE)
Outer coating: polyethylene (PE), epoxy resin (EP) or polyurethane (PU)
Core advantage
Outstanding anti-corrosion performance
The coating is dense and pore-free, isolating the steel pipe from contact with corrosive media
Resistant to corrosion by acids, alkalis, salts and various chemical media
Suitable for corrosive environments with a pH value of 212
The service life can reach 35 times that of ordinary steel pipes
Excellent physical properties
The coating has strong adhesion (≥30N/10mm)
Good impact resistance (≥5J)
High compressive strength (up to over 2.5MPa)
It has a wide operating temperature range (30℃ to 80℃
Good fluid properties
The inner wall is smooth, with a roughness of only 1/10 that of steel pipes
It has a low coefficient of friction and small conveying resistance
It does not form scale or breed bacteria, ensuring the cleanliness of the fluid
The conveying efficiency has been increased by 1520%
The comprehensive economic benefits are high
Low installation and maintenance costs
It has a long service life and a significant cost advantage throughout its entire life cycle
Maintenance-free or minimal maintenance, reducing operating costs
Production process flow
1. Pretreatment of steel pipes: Sandblasting for rust removal reaches Sa2.5 grade, with a surface roughness of 4080μm
2. Heating treatment: Medium frequency heating to 180-220℃
3. Coating process: Electrostatic spraying or dip coating
4. Curing and shaping: High-temperature curing forms a dense coating
5. Quality inspection: Electrical discharge leak detection, thickness measurement, adhesion testing, etc
