Oil Coated ERW Steel Pipe Manufacturer

Oil Coated ERW Steel Pipe

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Welded steel pipe coated with anti-rust oil for corrosion resistance

RuiTong Steel offers oil coated ERW steel pipes, a specialized option that undergoes a surface treatment with low-viscosity, environmentally-friendly anti-rust oil. This protective oil coating significantly reduces the risk of corrosion, thereby extending the operational lifespan of the pipes under various environmental conditions.

The anti-rust oil finish is applied to each pipe, ensuring a consistent protective barrier across all surfaces, designed to provide both durability and flexibility, accommodating specific requirements for various applications where moisture exposure is a concern, such as in underground or outdoor settings, making it a reliable choice for industries that prioritize longevity and corrosion resistance in their piping systems.

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
Surface Finish: Anti-rust oil
Length:
Regular length: 5.8m or 6m or 12m
Custom cut-to-length: 2m to 12m

Pipe End

Plain End
Beveled End
Grooved End
Threaded End

Specifications

BS 1387-85 XL

BS 1387-85L

BS 1387-85 M

ASTM A53 GRADE A SCH40


DN	Designation of Thread	Outside Diameter		Wall Thickness
DN	Designation of Thread	(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


DN	Designation of Thread	Outside Diameter		Wall Thickness
DN	Designation of Thread	(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


DN	Designation of Thread	Outside Diameter		Wall Thickness
DN	Designation of Thread	(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


NPS	Outside Diameter		Wall Thickness
NPS	(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