Product Details

ABOUT OUR COMPANY

Production	ASTM 1045 cold drawn seamless honed steel tube for gas cylinder
Standard	ASTM ,DIN, EN, GB, JIS, AISI ,etc.
Out Diameter	30mm-250mm
Wall Thickness	2mm-30mm
Material	10#-45#,16Mn ,st35-st52,q345,etc.
Length	1-12m or as customers required
Surface treatment	Black painting, black varnish, transparent oil, epoxy coating, etc, or according to the customer’s acquirement
Technique	Seamless ,DOM
Usage	1.hydraulic cylinder 2. automobile 3. oil drilling 4. textile machinery 5. printing machinery 6. engineering machinery
Package	1. Bundle packing. 2. Beveled end or plain end or vanished as buyer's required. 3. Marking: as per customer's requests. 4. Painting varnish coating on the pipe. 5. Plastic caps at ends.
Supply	1. Seamless steel pipe 2. cold drawn seamless steel tube 3. cold rolled seamless steel tube 4. hot-rolled steel pipe 5.hydraulic cylinder steel tube 6.DOM tube
Min Order Quantity	According to customer's requirement
Payment terms	L/C, T/T,

ABOUT THE TOLERANCE

OD	GB/T3639(GB8713)	DIN2391(EN10305)	Our Tolerence	Best Quality
4-30mm	±0.10mm	±0.08mm	±0.05mm	±0.02mm
31-40mm	±0.15mm	±0.15mm	±0.05mm	±0.03mm
41-50mm	±0.20mm	±0.20mm	±0.05mm	±0.03mm
51-60mm	±0.25mm	±0.25mm	±0.08mm	±0.03mm
61-70mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
71-160mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
Tolerance in WT	±0.12mm	±0.10mm	±0.05mm	±0.03mm

Process	Diameter	Length	Precision	Inner Hole Roughness
Cold Rolled	30-100mm	≤12 m	H8-H10	0.4-1.6
Cold Draw	30-250mm	≤12 m	H8-H10	0.8-1.6
Honing	40-500mm	≤12 m	H8-H9	0.4-0.8
Rolling	40-400mm	≤7 m	H8	0.4

Inner Diameter	H8	H9	H10
30mm	±0.033	±0.052	±0.084	5-30mm
30-50mm	±0.039	±0.062	±0.100	±0.080
50-80mm	±0.046	±0.074	±0.120
80-120mm	±0.054	±0.087	±0.140
120-180mm	±0.063	±0.100	±0.160
180-250mm	±0.072	±0.115	±0.185
250-315mm	±0.081	±0.130	±0.210
315-400mm	±0.089	±0.140	±0.230

ABOUT THE 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.

Our Services

1. Cargo track service during transporting and feedback service after cargo is loaded on board

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T , L/C And so on.

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 COMPANY :

we are the top 5 manufacture of precision seamless steel tube in China ,we have passed ISO 90012008 verified certificate ,our company mainly produces various specifications cold finished steel tube ,which are widely used in hydraulic cylinder ,automobile ,oil drilling ,textil machinery ,engineering machinery and so on ,if you are interested in our product welcome to our company to visting and nogotiate business .

ABOUT OUR CERTIFICATE

ABOUT THE APPLICATION