Painted Steel Pipe
Painted Steel Pipe Painted Steel Pipe Painted Steel Pipe Painted Steel Pipe Painted Steel Pipe

Painted ERW Steel Pipe

Welded steel pipe painted with color paint

China Steel Pipe Group manufactures painted ERW steel pipes that meet the high standards of quality and environmental safety. Using innovative spray equipment and advanced painting techniques, which include precise control of spray distance, pressure, speed, and angle, we ensure our painted pipes offer exceptional thickness, gloss, smoothness, and adhesion. Our choice of high-quality, eco-friendly paints adheres to national and international standards, providing a finish that stands out in any engineering and usage environment.

Painted steel pipes offer several advantages, including enhanced rust resistance, reduced welding splatter, and lower overall maintenance costs. These benefits make them ideal for applications requiring both aesthetic appeal and long-term durability. Common uses include structural frameworks, fencing, firefighting system, and various industrial fabrications.

request a quote

Standard

  • ASTM A53
  • ASTM A500
  • API 5L
  • ASTM A795
  • IS065
  • BS1387. BS1139
  • GBT 3091 & GB/T13793
  • GBT 3094

Applications

  • Structural Pipe/ Structural Tubing
  • Pipe Railing
  • Scaffolding Pipe
  • Fire Fighting Pipe
  • Greenhouse Pipe
  • Low Pressure Liquid Delivery Pipe

Size

  • Outside Diameter:

    Round tube: 21.3mm to 609.6mm
    Square tube: 10×10mm to 200×200mm
    Rectangular tube: 20×40mm to 80×120mm

  • Wall Thickness: 0.8mm to 17.5mm
  • Paint Color: Black, red or other color (customizable)
  • Length:

    Regular length: 5.8m or 6m or 12m
    Custom cut-to-length: 2m to 12m

Pipe End
  • Painted Steel Pipe Plain End
  • Painted Steel Pipe Beveled End
  • Painted Steel Pipe Grooved End
  • Painted Steel Pipe Threaded End
Specifications
BS 1387-85 XL
BS 1387-85L
BS 1387-85 M
ASTM A53 GRADE A SCH40
British Standards: BS 1387-85 XL
DN Designation of Thread Outside Diameter Wall Thickness
(mm) (inch) (mm) (inch)
15 1/2 21.40-21.00 0.843-0.827 1.80 0.071
20 3/4' 26.90-26.40 1.059-1.039 2.00 0.079
25 1' 33.80-33.20 1.331-1.307 2.00 0.079
32 1-1/4' 4250-41.90 1673-1.650 2.00 0.079
40 1-1/2' 48.40-47.80 1.906-1.882 2.3 0.091
50 2' 60.20-59.60 2.370-2.346 2.30 0.091
65 2-1/2' 76.00-7520 2.992-2.961 2.60 0.102
80 3' 88.70-87.90 3.492-3.461 2.60 0.102
100 4' 113.90-113.00 4.484-4.449 3.20 0.126
British Standards: BS 1387-85L
DN Designation of Thread Outside Diameter Wall Thickness
(mm) (inch) (mm) (inch)
15 1/2' 21.40-21.00 0.843-0.827 2.00 0.079
20 3/4' 26.90-26.40 1.059-1.039 2.30 0.091
25 1' 33.80-33.20 1.331-1.307 2.60 0.102
32 1-1/4' 4250-41.90 1.673-1.65 2.60 0.102
40 1-1/2' 48.40-47.80 1.906-1.882 2.90 0.11
50 2' 60.20-59.60 2.370-2.346 2.90 0.114
65 2-1/2' 76.00-75.20 2.992-2.961 3.2 0.126
80 3' 88.70-87.90 3.492-3.461 3.20 0.126
100 4' 113.90=113.00 4.484-4.449 3.60 0.142
British Standards: BS 1387-85 M
DN Designation of Thread Outside Diameter Wall Thickness
(mm) (inch) (mm) (inch)
15 1/2' 21.70-21.10 0.854-0.831 2.6 0.102
20 3/4' 27.20-26.60 1.071-1.047 2.6 0.102
25 1' 34.20-33.40 1.346-1.315 3.2 0.126
32 1-1/4' 42.90-42.10 1.689-1.657 3.2 0.126
40 1-1/2' 48.80-48.00 1.921-1.890 3.2 0.126
50 2' 60.80-59.80 2.394-2.354 3.6 0.142
65 2-1/2' 76.60-75.40 3.016-2.969 3.6 0.142
80 3' 89.50-88.10 3.524-3.469 4 0.157
100 4' 114.90-113.30 4.524-4.461 4.5 0.177
150 6' 166.10-164.10 6.539-6.461 5 0.197
ANSI Standards: ASTM A53 GRADE A SCH40
NPS Outside Diameter Wall Thickness
(mm) (inch) (mm) (inch)
1/2' 21.30 0.840 2.77 0.109
3/4' 26.70 1.050 2.87 0.113
1' 33.40 1.315 3.38 0.133
1-1/4' 42.20 1.660 3.56 0.140
1-1/2' 48.30 1.900 3.68 0.145
2' 60.30 2.375 3.91 0.154
2-1/2' 73.00 2.875 5.16 0.203
3' 88.90 3.500 5.49 0.216
4' 114.30 4.500 6.02 0.237
6' 168.30 6.625 7.11 0.280
8' 219.10 8.625 8.18 0.322
ERW Steel Pipe Production Process
  • Leveling
  • Ends Cutting
  • Slitting
  • Recoiling
  • Coil Ramp
  • Uncoiling
  • Leveling
  • Ends Cutting
  • Trimming & Welding
  • Coil Accumulator
  • Strip Ultrasonic Testing (UT)
  • Forming
  • High Frequency Welding
  • Welding
  • Deburring
  • Seam Annealing
  • Air/Water Cooling
  • Sizing (Round Tube)
  • Online Ultrasonic Testing (U.S. Test)
  • Sizing (Square & Rectangular Tube)
  • Straightening
  • Flying Cut-off
  • Flattening Test
  • End Finishing
  • Hydrostatic Test
  • Appearance Inspection
  • Offline Ultrasonic Testing (U.S. Test)
  • Marking
  • Oil Coating
  • Packaging & Storage
Get The Right Advice.
Contact Our Team Today

Have a question or need advice? Our team has the expertise to recommend the right solution.

Other Steel Pipes
Value-Added Services
As an experienced manufacturer in the steel pipes, our commitment extends beyond merely supplying products.
Steel Tube Manufacturer

Established in 2003, China Steel Pipe Group Corp.,Ltd . is a manufacturer in the steel pipes and PC strand wire industry. Our primary products include ERW pipes, SSAW pipes, LSAW pipes, high-precision welded pipes, prestressed steel wires, and prestressed steel strands. We also offer extensive processing services such as welding, grooving, threading, painting, and coating to meet your specific requirements. Our steel products are widely used in firefighting, cable management, material transportation, steel structures, railings, piling, construction, and machinery manufacturing.

Read More
  • Annual production capacity reaches 500,000 tons.
  • Stainless steel processing experience 21 years
  • Production scale houses more than 20 production lines