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ASTM A106 GR.B Cold drawn carbon steel pipe and process

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ASTM A106 GR.B Cold drawn carbon steel pipe and process

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carbon steel pipe
wall thickness :3mm-30mm
length:fixed length or non-fixed length
galvanised

1	standard	ASTMA106 GRB
2	Material	GRB
3	OD WI	1/4”-24”,13MM-610MM SCH120/20/40/60/80/160/100, XXS
4	Usage	Boileruse,wateransport,building,machinery,traffic,aviation,oil deve
5	OD Tollerance	D<48.3mm,+-0.4mm/-0.79,D48.3-114.3mm, +-0.79%,D>114.3mm
6	WT Tollerance	WT +-12.5%
7	Chemical	C:<0.30%,Si:>0.10,MN:0.29-1.06%,P;<0.035%, S;<0.035%,
8	Tensile strength	415MPA
9	Yield Point	240MPA
10	Elong-Ation
11	Other test	HY,ET
12	Length	2-12m Random,5.8m fixed, 6m fixed, 9m fixed
13	Suface	Black paint as rusty protect
14	Ends	2”below plain ends,2”above beveled ends
15	Methord	140mm bleow cold drawn,140mm above hot rolled,
16	Packing	6sheet strip, bundles,Caps,plastic wrap, loading belt
17	Min order	5tons, more quantity price very low

ASTM A106 GR.B Cold drawn carbon steel pipe

Cold drawn carbon steel pipe process

Cold drawn ( rolled ) seamless steel pipe: round perforated tube → heating → → → annealing → pickling → Heading oiled ( copper ) → multi-pass cold drawn ( rolled ) → billet tube → heat treatment → straightening → hydrostatic test ( testing ) → mark → storage .

Cold drawn steel pipe hot rolled coils as raw material, after descaling by pickling cold rolling , the finished product is hard roll , due to continuous work hardening caused by cold deformation so hard roll strength, hardness increased toughness plastic index declined , so stamping performance will deteriorate , only for simple deformation of the parts. Hard roll hot-dip galvanizing plant can be used as raw material , as hot dip galvanizing line is provided with annealing line . Hard roll weight is generally from 6 to 13.5 tons , coil diameter of 610mm.

Generally cold rolling plate, roll should go through continuous annealing (CAPL units ) or batch annealing and rolling to eliminate work hardening stress , an appropriate standard required mechanical properties .

Cold-rolled steel surface quality , appearance, dimensional accuracy better than hot-rolled plate , and its right- rolled thin product thickness 0.18mm or so, so the majority of users . Cold-rolled steel coil as the substrate for deep processing of products , a high value-added products . Such as galvanized, hot dip galvanized , electro-galvanized fingerprint resistant , painted steel coil and damping composite steel , PVC laminating steel , so that these products have beautiful, high corrosion resistance and other excellent quality , has been widely used. Cold rolled steel coil after annealing finishing must be carried out , including the cutting head , tail , cutting, flattening, smooth , heavy volume , or longitudinal clipboard and so on. Cold rolled products are widely used in automobile manufacturing , household electrical appliances , instrument switches , construction, office furniture and other industries. Steel strapping weight per package after 3 to 5 tons . Formation of coil weight is generally 3 to 10 t / Vol. Coil ID 610mm.

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