Hydraulic ERW Pipes
| NPS 1 1/2 & smaller |
NPS 2 & larger |
| one / 25 tons |
one / 50 tons |
Hydrostatic Testing
Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified.
Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and
electric-resistance-weld pipe.
Mechanical Tests Specified
Tensile Test -- Transverse required on ERW for NPS 8 and large.
Sending Test (Cold) -- STD and XS-NPS 2 and under XXS-NPS 1 1/4 and under.
| |
Degree of Bend |
Diameter of Mandrel |
| For Normal A53 Uses |
90 |
12 x nom dia. of pipe |
| For Close Coiling |
180 |
8 x nom dia. of pipe |
| Arc welding |
Atomic hydrogen (Athydo/AHW) |
| Electrogas (EGW) |
| Flash |
| Flux-cored (FCAW) |
| Gas metal (Microwire/MIG/GMAW) |
| Gas tungsten (Heliarc/TIG/GTAW) |
| Plasma (PAW) |
| Shielded metal (Stick/MMA/SMAW) |
| Submerged (SAW) |
| |
| Other processes |
Electric resistance (ERW) |
| Electron beam (EBW) |
| Electroslag (ESW) |
| Exothermic |
| Forge |
| Friction |
| Friction stir (FSW) |
| Friction stud |
| Laser beam (LBW) |
| Laser-hybrid |
| Magnetic pulse |
| Oxyacetylene (OAW) |
| Spot (RSW) |
| Ultrasonic |
| Upset |
| |
| Equipment |
Electrode |
| Filler metal |
| Helmet |
| Power supply |
| Robot |
| Shielding gas |
| |
| Related terms |
Heat-affected zone |
| Photokeratitis |
| Residual stress |
| Weldability |
Application Areas
• Structural and engineering purposes: Fencing, line pipes, scaffolding
• Water and gas conveyance, oil country tubular
• Automobiles Sector (Tremendous increase in usage in recent years)
• Agriculture Sector
• Hand pumps for deep boring wells, Drinking water in housings
• Collieries for extraction of Water, Thermal Powers
• For strong protection of cables by Telecom Department
Contact Grand Metal Corporation today for a best offer & competitive quotation…
Call: +91 98927 02393, 97690 58811
Email: grandmetalcorporation@gmail.com
