Cold Rolled ERW Welded Black Steel Pipe

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Cold Rolled ERWWelded Black Steel Pipe

Our cold rolled ERWwelded black steel pipe is qualified by the ASTM and DIN. It is usually used to transferthe low pressure fluid, and make the engineering component and light industrialproduct. Its dimensional precision isreally high. E.g. the outer diameter tolerance is less than 0.1mm, plus or minus. The customer can choosethe raw material from Q345, 65Mn and many other types of steel, and require thewall thickness no more than 3mm.The length of the product commonly ranges from 0.3m to 12m,but the customer also can determine it.

Technical Parameters

Material	Optional
Customized service	Yes
Casting standard	GB/T3091-2001, GB/T3087,BS1387-1985, DIN EN10025, EN10219, ASTM SCH40/SCH80,ASTM-A53
Welding method	ERW
Surface effect	Black
Sectional shape	Round, square, rectangular, oval, hexagon, etc.
Thickness	0.5 - 3.0mm
Length	0.3-12m Cut -to-length is available upon request.
Steel grade:	Q195, Q235, Q345, SPCC, SPHC, 65Mn, 08AL, M8.
OD tolerance:	/-0.1mm

The major production procedures

Hot roll making
Acid washing
Cold rolling
Annealing
Slitting
Air cooling
Tubing
Cutting
Antirust oil process
Wrapping film
Kraft paper packing
Woven bag
Belt packing
Final products