Production Process and Quality Control
Juming Steel Pipe strictly implements full-process quality control during the production of Quality Q235B Steel Pipes:
Raw Materials: Selected high-quality strip steel coils, steel plates, welding wire, and flux
Forming Process: Cold bending / Spiral forming / Straight seam pressing
Welding Methods:
Double-wire double-sided submerged arc welding
High-frequency resistance welding (ERW)
Weld Inspection:
Online UT ultrasonic testing (100% coverage)
X-ray re-inspection (critical areas)
Finished Product Inspection:
Hydraulic pressure test
Outer diameter, wall thickness, and ovality inspection
End face beveling precision machining
All data is recordable, traceable, and reportable.
Surface Treatment
Supports multiple anti-corrosion and surface treatment solutions:
Black pipe
3PE anti-corrosion
Epoxy coal tar
FBE fusion bonded epoxy
Rust-preventive oil / varnish
Customized according to customer requirements
Main Application Areas
Municipal water supply and drainage engineering
Oil and natural gas transmission pipelines
Industrial liquid and gas transmission
Pile foundation engineering, bridge engineering
Steel structures and mechanical structures
Overseas engineering project export
Why choose Juming Steel Pipe?
1. Tianjin source factory, not a trading company
2. Years of experience in exporting Q235B steel pipes
3. Full specifications, multiple processes, one-stop supply
4. Complete testing, supports third-party re-inspection
5. Familiar with overseas project standards, efficient communication
