DIN2391 NBK St52 Precision Seseamless Steel Pipe
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
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.
Bright black color is homogeneously distributed on the tube
surface. The tube has good property of antirust.
Phosphated hydraulic tube is mainly used in hydraulic system.
5.Our products are widely used in:
Engineering machinery Machine tool industry Hydraulic industry
Automobile pipeline Heavy machinery Compressor Shipbuilding
Railway locomotive Diesel engine Utility boiler Injection molding
Power equipment Heavy duty automobile Forging and stamping machine
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
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
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
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
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample of DIN2391 NBK St52 Precision
Seseamless Steel Pipe for free charge but need pay the cost
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