Precision Seamless Steel Tube for High Pressure Oil Steam / Chemical Lines
TORICH is a professional steel tubes supplier from China with over 23 years manufacturing and exporting experience.
Our main products are seamless precision pipe,carbon steel seamless precision pipe,alloy steel seamless precision pipe, stainless steel seamless precision pipe.The material we usually use for producing Precision Seamless Steel Tube is10#,20#,1010,1020,1026,ST37,ST44,E235,E215,E355
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.
| Mechanical Properties of ASTM A519: |
| Grade | condition | MPa Tensile point | Yield point | Elongation |
| 1020 | CW | ≥414 | ≥483 | ≥5% |
| | SR | ≥345 | ≥448 | ≥10% |
| | A | ≥193 | ≥331 | ≥30% |
| | N | ≥379 | ≥379 | ≥22% |
| 1025 | CW | ≥448 | ≥517 | ≥5% |
| | SR | ≥379 | ≥483 | ≥8% |
| | A | ≥207 | ≥365 | ≥25% |
| | N | ≥248 | ≥379 | ≥22% |
| 4130 | SR | ≥586 | ≥724 | ≥10% |
| | A | ≥379 | ≥517 | ≥30% |
| | N | ≥414 | ≥621 | ≥20% |
| 4140 | SR | ≥689 | ≥855 | ≥10% |
| | A | ≥414 | ≥552 | ≥25% |
| | N | ≥621 | ≥855 | ≥20% |
Delivery Condition:
1. BK (+C) No heat treatment after last cold forming process.
2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing)
3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed.
4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in acontrolled atmosphere.
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
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.
FAQ
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
EN10305-4 E235 +N Seamless Precision Hydraulic Tube for High Pressure Oil Steam and Chemical Lines
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