The hot pass isn’t really that hot when you are tig welding a pipe weld.
The term hot pass probably came from stick welding pipe with 6010 where you run the second pass pretty hot to burn out any slag left over from the root pass.
For pipe welds that are tig welded, the second pass is often done at the same amperage as the root….and the goal is to put in a good root pass and then not screw it up with the hot pass.
After the hot pass is in, its less likely you will mess anything up.
Some pipe welding tests are tig welded all the way out. But some are combo welds with tig root and hot pass but stick welded the rest of the way.
Size: OD 15x15mm-600x600mm / 20x30mm-600x800mm
Wall Thickness 1.4mm-12mm
Length Less Than 12m
Q195 → Grade B, SS330,SPHC, S185
Q215 → Grade C,CS Type B,SS330, SPHC
Q235 → Grade D,SS400,S235JR,S235JO,S235J2
Standard BS EN10296,BS EN10025,BS EN10297,BS6323, BSEN10219,BSEN10217,GB/T13793-1992,GB/T14291-2006, GB/T3091-1993,GB/T3092-1993,GB3640-88
Usage Used For Structure, Accessorize And Construction
Ends 1) Plain
3) Thread with Coupling or cap
End protector 1) Plastic pipe cap
2) Iron protector
Surface Treatment 1) Bared
2) Black Painted (varnish coating)
4) With Oiled
5) 3 PE, FBE, corrosion resistant coating
Technique Electronic Resistance Welded (ERW )
Electronic Fusion Welded (EFW)
Double Submerged Arc Welded (DSAW)
Welded Line Type Longitudinal
Section Shape Round
Inspection With Hydraulic Testing, Eddy Current , Infrared Test
Package 1) Bundle,
2) In Bulk
4) Clients’ Requirements
Delivery 1) Container
2) Bulk carrier
Port of Shipment Xingang Port, China
Date of Delivery According To The Quantity And Specification Of Each Order
Payment L/C T/T Western Union
Others Fitting as screws and flange also can be supplied.
(1).Construction: Hall Structure, Sea Trestle, Airport Structure, Shipbuilding, Security Door Frames, Garage Doors, Strengthening Liners of Steel Doors and Windows, Indoor Partition Walls, Cable Bridge Structures and Expressway Safety Guards, Balustrade, Decorating, Residential, Ornamental Pipes
(2).Automotive Parts: Motorcar Case, Car and Bus Manufacture, Vehicles
(3).Agriculture: Agricultural Equipment
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(5).Traffic: Walking Rails, Roll-up Doors, Guardrail, Plaza Structure, Signage, Road Furniture,Fencing
(6).Logistics Storage: Supermarket Shelves, Containers, Transport Industries, Commercial Construction
(7).Scaffolding Tube: Material Storage Racks, Pallets, Hydraulic Platforms, Trusses, Columns, Purlins, Greenhouse Stands Towers
(8).Other: Sports Apparatus, Leisure Equipment, Furniture, School Furniture
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