spiral welded steel pipe piles The dry extension length of the welding wire, that is, the extension length of the welding wire between the conductive nozzle and the arc generated by the workpiece.The longer the dry extension, the lower the arc voltage;The shorter the dry extension.
spiral welded steel pipe piles specifications
ASTM, GB, API, JIS, BS, DIN, YB, SNY, ETC
Q235, Q195, Q345, Q215, API 5L Gr.B,Gr.65,Gr.60,Gr.70,
Outer Diameter: 15mm-1626mm
Wall Thickness: 2mm-30mm
Length: 6m-12m Or As Requested
ERW, LSAW, SSAW, DSAW
Black Painted, PE/PVC/Pp Coated, Galvanized, Color Coated, Anti Rust Varnished,
Anti Rust Oiled, Checkered, Epoxy Coating, Etc.
Plain End, Spigot & Socket Joint, Beveled, Cut Square, FLANGED, Piling Shoes
1) Plastic Pipe Cap
2) Iron Protector
Standard Export Package, Suit For All Kinds Of Transport Or As Required.
EXW, Fob, CFR, CIF, Etc.
T/T, L/C At Sight, Etc.
1) General Service For Industries ( Petroleum, Chemical, Aviation, Etc.)
2) Fluid, Gas And Oil Transport,
3) Press And Heat Transmission,
4) City Construction, Etc.
The dry extension length of the welding wire, that is, the extension length of the welding wire between the conductive nozzle and the arc generated by the workpiece.The longer the dry extension, the lower the arc voltage;The shorter the dry extension, the higher the arc voltage.In general, the length of dry extension should be controlled in 19 ~ 25.Between 4 millimeter advisable.If the length of dry extension is less than 19 mm, the arc voltage increases, the resistance heat of the wire sheet increases, the wire feed is blocked in the conductive nozzle due to the increase in resistance heat, slowing down the wire feed speed, and the resistance heat increases, the wire core particles fine, also can cause the drop in self-protection pressure and condensation pool rapid generation of pores.If the dry extension is greater than 25.4 mm, arc voltage decreased, often accompanied by broken welding wire, wire top, wire phenomenon.Generally, the dry extension length of welding wire is less than 19 mm, which often occurs in the position of flat welding and vertical welding;Dry extension length greater than 25.4 mm, easy to occur in the position of overhead welding.The length control of the welding wire is very important to ensure the welding quality.
The Process Flow
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We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
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