Effect of welding material on weld microstructure and properties of spiral seam prefinished pipe

- Jan 30, 2019-

The Effect of Welding Material on Weld Microstructure and Properties of Spiral Two-step Welding Pipe 

Abstract: Aim at the problem of LASO steel weld impact property which occurred in mass production spiral two-step welding pipe, using the welding wire with higher contents of Cr, Ni ,Ti and other elements to conduct welding, weld sample was taken out through different welding match, the microstructure and mechanical properties were analyzed, the results indicated that the total quantity of proeutectoid ferrite distributed in both sides of column crystal was reduced after replacing welding wire. The weld microstructure mainly included acicular ferrite, the grain of acicular ferrite (AF), proeutectoid fen'ite (PF)was finer, its impact toughness value was obviously increased. Key words: spiral two-step welding pipe; welding material component; proeutectoid ferrite (PF); acicular fenite (AF); impact toughness 

Product Description
Product Name
seamless steel pipe
1010,1026, X42, X46, X52, X56, X60, X70,ASTM A106B, ST52, ST37,ST45,ST45..
API, ASTM A530, ASTM A519, ASTM A53,  GB 3087, GB/T8163, GB 5130, GB/T 8162, 
Outer diameter
Wall thickness
1-12m, Fixed length, random length or as required
Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size, Nondestructive Testing
Competitive price, Quality assurance, Short delivery time, Superior Service, Minimum quantity is small
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Packing Details  : in hexagonal sea-worthy bundles using steel straps and cotton slings,

                                     with antirust oil/paint,marking and plastic protecting caps

Delivery Details  : 20-60days after order of seamless steel pipes

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Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

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