Cold Drawn Hot Rolled Hexagonal Steel Tube

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Oiled
• Usage: Hydraulic/Automobile Pipe, Construction & Decoration, Special Purpose
• Section Shape: Special Section
• Model NO.: KM-20191206
• Diameter: 30mm-400mm
• Thickness: 2-30mm
• Transport Package: in Bundle
• Specification: 30MM-400MM
• Trademark: KINGMETAL
• Origin: China
• HS Code: 7228600000
• Production Capacity: 3000 Tons Per Month

Product Description

Cold drawn hot rolled hexagonal steel tube
 

Standard	Cold drawn/hot rolled hexagonal steel tube /hexagonal bar/hex bar
Grade	ST35(E235), ST37, ST24(E255), ST52(E355), 10#, 20#, 35#, 45#,AISI 1010 1020 1045
O.D.	30MM-400MM
W.T.	2-30mm
Surface Treatment	Polished , cold drawn , cold rolled, honed, anneal, Srb , od polished
Packing	1. bundle packing 2. marking as per customer's requests 3. paint on the pipe as per customer request 4. pipe caps as customer request
Condition of Delivery	1. NBK(+N) after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee

 

Variety

Processing	Cylinder Diameter	Straightness	Size Accuracy	W.T/mm	Inner Bore Roughess
Cold drawn	ID30-250	0.3	H9-H11	±10%	0.4~1.6um
Honed tube	ID50-250	0.3	H7-H9	±10%	<0.4um

 

Mechanics performance

Material	Tensile strength	Yield strength	Elongation	Hardness
Ck20/20#/AISI1020	>520 N/ mm^2	>375 N/mm2	>15%	>85HB
Ck45/45#/AISI1045	>600 N/ mm^2	>520 N/ mm^2	>15%	>85HB
ST52/16Mn/Q345D	>600 N/ mm^2	>520 N/ mm^2	>15%	>85HB
25Mn/STKM 13C-T	>600 N/ mm^2	>530 N/ mm^2	>15%	>85HB