Red Painting Q345 St37 St42 ASTM 4140 Welded Steel Pipe
The process of high-frequency welded pipe production depends on the product variety, from raw materials to finished products need to go through a series of processes, the completion of these processes require a variety of mechanical equipment and welding, electrical control, detection devices, these devices and devices in accordance with different processes with a variety of reasonable layout of the process, high-frequency welded pipe typical process: open book – strip leveling – head and tail shear – steel butt welding – live storage – forming – welding – remove the burr – sizing – initial inspection – straightening of pipe – pipe section processing – water pressure test – flaw detection – printing and coating – finished product.
High-frequency welding is the use of continuous contact with the workpiece surface of the high-frequency current generated by the heat generated by heating and in the case of the application of forging force, the workpiece metal to achieve a series of welding methods. It is similar to ordinary resistance welding, but there are many important differences.High-frequency welding for carbon steel pipe production has been 40 years of history. High-frequency welding has a large power supply, the different materials, caliber and wall thickness of the steel pipe can achieve a higher welding speed (higher than the maximum welding speed of welding more than l0 times). Therefore, the high-frequency welding production of general-purpose steel pipe has a high productivity because of high-frequency welding speed, to the pipe to remove the burrs difficult, which is the current high-frequency welded steel pipe is not acceptable for the chemical industry, nuclear industry one. From the welding material, high-frequency welding can be welded all types of steel pipe.
Important part of high frequency welded pipe production process
1. In the process of high-frequency welded pipe production, how to ensure that product quality in line with the requirements of technical standards and customer needs
| Material | 10#,20#,45#,Q345,A106-B,20Cr,15CrMo,St37,St42,ASTM 4140 etc. |
| Standard | JIS,GB,ASTM,DIN |
| Technique | Cold Rolled/Hot Rolled |
| OD | 10~335mm,1/2"~12" |
| Wall Thickness | 2~25mm,SCH10~XXS |
| Length | 5.8m~12m/customized design |
| Surface Treatment | black painting, varnish, oil, galvanized, anti corrosion coatings |
| Packaging | 1. Bundle packing. |
| 2. Bevelled end or plain end or warnished as per buyer's required. |
| 3. Marking: as per customer's requests. |
| Payment Terms | T/T,L/C etc |
| Testing | Chemical Component Analysis, Mechanical Properties, |
| Exterior Size Inspection, hydraulic testing etc. |
| Advantages | 1. Reasonable price with excellent quality |
| 2. Abundant stock and prompt delivery |
| 3. Rich supply and export experience, sincere service |
| 4. Reliable forwarder, 2-hour away from port. |
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Red Painting Q345 St37 St42 ASTM 4140 Welded Steel Pipe Images
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