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NBK Seamless Precision Steel Tube

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Address: Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China

Contact name:Richard SHEN

TORICH INTERNATIONAL LIMITED

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NBK Seamless Precision Steel Tube

Country/Region	china
City & Province	ningbo zhejiang
Categories	Metal Casting Machinery

Product Details

NBK Seamless Precision Steel Tube

1.Quick Detail:
Black Phosphated Hydraulic Tubes with High Precision
EN10305-1, EN10305-4, DIN2391,
E235, E355, ST37.0, ST44.0, ST52.0
Steel Pipes with high precision for Hydraulic Systems Black Phosphating

2.Production process:
DIN series tubes, cold drawn and bright annealed precision seamless steel tube is used as the tube to be phosphated. The phosphorization is realized with the imported chemical fluid to form a black film. The antirust oil is absorbed by means of the micropore on the film to prevent the tubes from getting rust.

3.Main Features:
Bright black color is homogeneously distributed on the tube surface. The tube has good property of antirust.

4.Main Application:
Phosphated hydraulic tube is mainly used in hydraulic system.

5.Our products are widely used in:
Engineering machinery Machine tool industry Hydraulic industry Special vehicle
Automobile pipeline Heavy machinery Compressor Shipbuilding industry
Railway locomotive Diesel engine Utility boiler Injection molding machine
Power equipment Heavy duty automobile Forging and stamping machine

6.Main Characteristics:
No Oxidation Layer on the Outer and Inner Walls
No Crack under Flaring and Flattening
No Leakage under High Pressure
No Distortion after Cold Bending
High Precision High Cleanness Excellent Brightness

Chemical Composition(%):
Standard	Steel Grade	C	Si	Mn	P	S
DIN 1630	ST37.4	≤0.17	≤0.35	≥0.35	≤0.04	≤0.040

Mechanical Properties:
Standard	Steel Grade	Yield Strength min.(Mpa)	Tensile Strength (Mpa)	Elongation A min.(%)
DIN 1630	ST37.4	225	350-480	25

Regular size
OD.	WT.	OD.	WT.	OD.	WT.
0.188''	0.035''	0.500''	0.049''	0.750''	0.095''
0.250''	0.035''	0.500''	0.065''	0.750''	0.109''
0.250''	0.049''	0.500''	0.083''	1.000''	0.065''
0.313''	0.049''	0.625''	0.065''	1.000''	0.095''
0.313''	0.065''	0.625''	0.095''	1.000''	0.120''
0.375''	0.049''	0.750''	0.049''	1.250''	0.095''
0.375''	0.065''	0.750''	0.065''	1.250''	0.120''

Detailed Images

QUALITY CONTROL

1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness,

Impact, Mictrostruture etc
8~ Packing and Stocking.

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us

DIN2391 ST52 EN10305-4 E355 NBK Seamless Precision Steel Tube