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Spiral submerged arc welding steel pipe

Standard:API 5L, GB/T9711, Grade:Q235,Q345,B,X42,X52,X60,X65,X70 Outside diameter:219-2420mm Wall thickness:5.00-30.00mm Length:6-20m Technique:Double sides submerged arc welding steel pipe Certificate:ISO9001:2008,API SPEC 5L

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