Whether we transport hundreds of miles of water or pipe gas in accordance with federal standards and regulations, our steel pipes and tubular products are durable. They are applicable to the design and manufacture of applications.
For the mass transport of water steel pipe
, we are the largest supplier of spiral welded steel pipes in North America, all kinds of applied rolling and welded straight pipes, and custom pipes. These options include a variety of lining and coating types, professional support from engineering to construction and installation, and joint connection alternatives suitable for application. Customers can easily access them through our internal sales team.
Water steel pipe
AWWA C200 steel pipes are widely used in the following fields/industries:
Hydroelectric power station, potable
Water supply industry, irrigation pressure pipeline, sewage treatment pipeline
AWWA C200 standard covers butt welding, straight seam or spiral seam steel pipe, 6. (150 mm) and larger, for the delivery and distribution of water, including requirements for the manufacture of pipes, welding operations, allowable variations in weight and dimensions, preparation of the ends, manufacture of special parts, inspection and test procedures.
All work and materials stipulated in this standard can be inspected by the buyer, but such inspections shall not relieve the manufacturer of the responsibility for providing materials and performing work in accordance with this standard.
Manufacturers should maintain quality assurance programs to ensure that the minimum standards are met. It should include registered welding inspectors (AWS QC1) to verify qualified welders and welding procedures, procedures being implemented with limited testing and quality assurance functions.
Finished tubes should not be unacceptable defects. When the flaw depth is greater than 12.5% of the nominal wall thickness, the defects of the seamless steel pipe
or weld base metal will be considered unacceptable.
If the depth of the flaw exceeds 1/3 of the nominal wall thickness of the pipe, the defect cannot be repaired if the length of the flaw having a depth greater than 12.5% is greater than 25% of the outer diameter of the pipe. Each repaired pipe should meet the standard requirements for hydrostatic testing.
Consecutive positions in each section of the pipe and in each special section shall be marked with serial numbers or other marks.