Carbon Black Steel Square Pipe 5/8x5/8-inch PAP Best Price

Carbon Steel Square Pipes for General Structural Purposes

Carbon steel square pipes are suitable for civil engineering work, architectural structure, piles, scaffolding work, and many other forms of structural works. 

Industrial Standard

• ASTM A500
• EN 10219
• JIS G 3444
• TIS 107

Production Process

Our steel pipes are manufactured by the process of Electric Resistance Welded production system (ERW) and are inspected thoroughly the entire production process. The inspection is strictly controlled by our proficient technicians and skillful workers in order to assure that all products meet the expected quality standard and are worth customer’s confidence. 

Raw Material Inspection

• Chemical composition test on hot roll coils by SPECTROMETER
• Tensile test on strain of steels

General Inspection of Pipes

• Straightening inspection of pipes
• Surface inspection

Size Inspection

• Inspecting on pipe diameter
• Inspecting on pipe length
• Inspecting on wall thickness
• Inspecting on weight

Welding inspection by EDDY CURRENT FLAW DETECTOR

Pressure test by HYDROSTATIC PRESSURE TEST

Mechanical Property Testing

• Bending test
• Flattening test
• Expansion test

Zinc thickness and smoothness zinc coat testing

Threaded end inspection by THREADED RING GAUGE

Adhesion Test for Coated Pipe