Standard cold drawing anneal steel piping for sewing machine

Specifications Grade :45# , 20#, Q345B, 25Mn, 16Mn 42CrMo

MOQ: 1Ton

fastest ship date: within 10days for some styles

QC: ISO9001 standard

 About our productions: <

Production Details:
Grade:	20#(CK20,AISI1020),45#(CK45,AISI1045),Q345,ST52(16Mn,Q345D), 42CrMo,25Mn (STKM13C-T),27SiMn.etc cold drawn seamless pipes
ID:	50-250mm
ID tolerance:	H8,H9
Surface roughness:	Ra 0.02—0.4μm
Final supply condition:	cold drawn and stress-relieved(BK+S)
Machining allowance:	0.5-1.5mm
Wall thickness:	10%×ID

  <

Mechanics performance:
Material	Tensile strength	Yield strength	Elongation	Hardness
CK20/20#/AISI1020	>520 N/ mm2	>375 N/mm2	>15%	>85HB
CK45/45#/AISI1045	>600 N/ mm2	>520 N/ mm2	>15%	>85HB
ST52/16Mn/Q345D	>600 N/ mm2	>520 N/ mm2	>15%	>85HB
25Mn/STKM 13C-T	>600 N/ mm2	>530 N/ mm2	>15%	>85HB

   

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

   

Tolerance on ID:
No.	Inside diameter (mm)	ID machining allowance (mm)
1	300-80	0.5-0.8
2	81-125	0.7-1.1
3	125-200	0.9-1.2
4	200-250	1-1.5
Other dimension can be customize

              About our work flow:            About our package: About our test equipment:   About our company:       About our certificate:     ♥ If you are interested in us, please feel free to contact us: ξ Sales: Emily Zheng ö Skype: Emily Zheng ΔTEL: 86-535-6835398 ωYou can find my E-mail address from the first picture
ζ Our website: http://ytxinpeng.en.alibaba.com  
<Thank you so much for all of your concern and precious time!♥>