Large Diameter Longitudinal Submerged Arc Welding Pipe
Our company has advanced longitudinal submerged arc welding production line, which can produce longitudinal submerged arc welding pipes whose diameter is Φ350-5000 mm, thickness is 6-80 mm, length is 3-12 mm. We also have advanced double sided spiral submerged arc welding steel pipe production line, which can produce double sided spiral submerged arc welding steel pipes whose diameter is Φ219-2820 mm, thickness is 6-30 mm. Besides, we produce 3PE Anticorrosion Spiral Steel Pipes. By implementing API SPEC 5L, GB/T9711-2011, SY/T5037-2008, ASTM A252\A53, ISO3183, DIN17172, EN10217, JIS G3457, GB/T3091-2015,GB/T21835 standards, we can also produce special qualified pipes depending on customers’ requirements.
Large Diameter Longitudinal Submerged Arc Welding Pipe
Large diameter longitudinal submerged arc welding pipes can meet the pipe demands for land and ocean transportation for oil gas, natural gas, heat supply, water supply, coal slurry, ore pulp and pipe needs for ocean platform, power station, railway and highway bridge culvert, papermaking, chemical engineering, stadium and urban architecture.
Technical Process
Board Ultrasonic Examination→Edge Milling→Prebend→Mold→Joint Preweld→Inner Weld→Outer Weld→Ultrasonic Examination→X-ray Examination→Expanding→Flame Flat→Hydrostatic Test→Ends Trimming→Ultrasonic Examination→Ends Photo→Finishing→Straightening→Chamfering→Magnetic Powder Inspection→Weight and Measuring→Stenciling→Delivery
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