Product Details

Company Information

STKM11A STKM13C BKS seamless cold rolled hydraulic pipe

About our company :

Yan Tai XinPeng Steel Pipe Co.,Ltd

Located in yantai, a beautiful coastal city.our company is in the APEC Science&Technology Industrial Park,urban area of yantai,with convenient transportaton.Established in December 1992, our company mainly products various specifications of cold -drawn precision seamless steel tube and hydraulic precision cylinder ,which are widely used in such industries as hydro-cylinder,automobile,engineering machinery ,textile machinery ,printing machinery ,oil drilling,etc.Our company is also the distributer of several domestic well-known steel tube plants in shandong,and mianly distributes seamless steel tubes of all kinds of materials.

ABOUT OUR PRODUCT

commodity name Cylinder ID Thickness	Pneumatic cylinder tube cold drawn and BKW finished seamless steel pipe 30-250mm 2-30mm
Standard	EN10305/DIN2391
	ASTM /AISI
	GB/T 8162/ 8163
Material	China	20# 45#(CK45) 16Mn(ST52) 25Mn 27SiMn etc.
	German	St42-2 DIN1626,St45-8 DIN17175,St45-4 DIN1629,CK45,St52 DIN1629
	American	ASTM A53-B,ASTM A106-B,ASTM A178-C,ASTM A1045,ASTM A210-C etc.
Length	as your requirements max: 14m/45.9feet
Surface treatment	Black painting, black varnish, transparent oil, or according to the customer’s acquirement
Technique	Seamless cold drawn /cold rolling /honing/skiving and roller
Usage	1.Hydraulic cylinder /pneumatic cylinder 2. Pumps 3.Motor shells 4.Transmission shafts 5.Transmission roller steel pipes 6.Casing Tube 7.Boiler pipe
Package	1. Bundle packing. 2. Bevelled end or plain end or warnished as your required. 3. Painting varnish coating on the pipe. 4. Plastic caps at ends.
MOQ Delivery time	as your needs within 25 days

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

our processing

ABOUT OUR PACKAGING AND SHIPPING

1)Delivery time: In 20 days or according to client's requires

(2)Trade terms: EXW/FOB/CIF etc

(3)Payments: T/T or L/C or according to client's requires

(4)Port: Yantai or Qingdao

(5)MOQ: 5 metric tons or at customer's demands

(6)Packing: we usually bundle with steel strips ,branding parcel or wooden box outside ,or according to the customer’s acquirement

ABOUT OUR TESTING

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.

ABOUT OUR CETIFICATE