Shiwei Industry And Trade Group Co., Ltd.
Shiwei Industry And Trade Group Co., Ltd.
Products

Water facility welded stainless steel pipe

In the demanding environment of water treatment and distribution, material integrity directly impacts system safety and longevity. Our Water processing stainless welded steel tube is engineered to handle continuous exposure to chlorinated water, varying pH levels, and high flow velocities without degradation. As a dedicated Water treatment grade stainless steel tubing, it meets stringent sanitary standards required for potable water conveyance. For filtration and purification networks, the Welded stainless pipe for water purification provides a smooth interior surface that resists biofilm adhesion, ensuring consistent water quality. In specialized aquatic installations, the Aquatic treatment stainless welded conduit delivers corrosion resistance in marine or high-humidity settings. Each product is fabricated with precision welding to eliminate leak points and maintain structural uniformity across long pipe runs.


Water facility welded stainless steel pipe is produced through longitudinal welding of premium stainless steel coils, followed by solution annealing and pickling to restore optimum metallurgical properties in the weld zone. This manufacturing approach yields consistent wall dimensions and mechanical strength equal to seamless alternatives while offering cost efficiencies for larger diameters. The pipes undergo hydrostatic testing, eddy current examination, and visual inspection to guarantee compliance with global water industry specifications. They are available in multiple surface finishes, including polished and passivated options, to further enhance corrosion protection in potable water and wastewater treatment applications. The combination of robust weld integrity, precise dimensional tolerances, and reliable post-weld treatment makes these pipes a trusted choice for municipal and industrial water facilities.

Product Specifications

ParameterDetails
Material GradesASTM 304/304L, 316/316L, duplex 2205 (custom alloys available)
Outer Diameter Range1/2" NPS through 48" NPS (DN15 – DN1200)
Wall ThicknessSchedule 5S, 10S, 40S, 80S; custom thicknesses upon request
LengthStandard 20 ft (6 m), random lengths, or cut-to-length
Manufacturing StandardsASTM A312, A778, A409; AWWA C220; EN 10217-7
Surface FinishMill finish, 180 grit polished, 2B, BA, passivated
End TypesPlain end, beveled, grooved, flanged
Pressure RatingsCalculated per ASME B31.1/B31.3; typically up to 300 psi at ambient temperature
TestingHydrostatic test (1.5x design pressure), eddy current, dye penetrant, radiography optional

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