ERW Steel Pipe( Electric Resistance Welded Steel Pipe )
ERW LINE PIPE
Standard:API SPEC 5L, GB/T 9711-1, GB/T 9711-2, ISO 3183-1, ISO 3193-2 Application:For conveying gas, water, and oi l in both the oil and natural gas industries.
Tolerances of Outside Diameter
Tolerances of Wall Thickness
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