DIN2391-2 ST37 Cold Drawn Precision Seamless Steel Tube for
Hydraulic Cylinder
Torich International Limited is a professional manufacturer and
supllier for Stainless Steel Tubes DIN2391-2 ST37 Oiled Seamless
Stainless Steel Tubing For Hydraulic Cylinder
IN2391-2 ST37 Oiled Seamless Stainless Steel Tube is a type of
steel tube made of stainless steel with a steel grade of ST37. This
seamless tube is manufactured according to DIN 2391-2
specifications and is widely used in various industries such as
automotive, hydraulic, and instrumentation.
| product | DIN2391-2 ST35 Cold Drawn Precision Seamless Steel Tube for
Hydraulic Cylinder |
| outer diameter | 5-120mm |
| wall thickness | 0.5-20mm |
| tolerance | less than +/-0.05mm |
| length | 2-8m |
| character | fine finish outside and inside, smooth surface, high precision, oil
surface prevent rust , produce as customers' drawing |
| standard | DIN2391-2 |
| usage | machinery,damper,automobile fittings, metal products, refrigeration
facilities, fasteners, ironware and so on |
| min order quantity | 1 ton |
| packing details | water proof bags or as required |
| delivery time | 20-30 days |
| payment term | L/C, TT |
| Element | Composition (%) |
|---|
| Carbon (C) | 0.17 max |
| Silicon (Si) | 0.35 max |
| Manganese (Mn) | 0.40-1.20 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Chromium (Cr) | 0.25 max |
Characters:
1,high temperature strength
2,high temperature correrosion resistance
3,good weldability
Application:frequently used in rings , steel ball,roller,and also made into all
kinds of machine parrs that require high strength,high
toughness,high abrasive resistance such as Spiral gauges and so on
and so forth
Referenced Documents
1)ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars,
Carbon and Alloy, Hot-Wrought
A751 Test Methods, Practices, and Terminology for Chemical Analysis
of Steel Products
E45 Test Methods for Determining the Inclusion Content of Steel
E112 Test Methods for Determining Average Grain SizeE381 Method of
Macroetch Testing Steel Bars, Billets,Blooms, and Forgings
E1019 Test Methods for Determination of Carbon, Sulfur,Nitrogen,
and Oxygen in Steel, Iron, Nickel, and CobaltAlloys by Various
Combustion and Fusion TechniquesE1077 Test Methods for Estimating
the Depth of Decarbur-ization of Steel Specimens
2)ISO Standard:
ISO 683 Part 17: Ball and Roller Bearing Steels
| Steel Grade and Chemical Compositions: | | |
| Steel | C | Mn | P | S | Si | Cr | Mo |
| Grade | max | | max | max | max | min | |
| 1008 | 0.10 | 0.30-0.50 | 0.040 | 0.050 | | | |
| 1010 | 0.08-0.13 | 0.30-0.60 | 0.040 | 0.050 | | | |
| 1018 | 0.15-0.20 | 0.60-0.90 | 0.040 | 0.050 | | | |
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.040 | 0.050 | | | |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.040 | 0.050 | | | |
| 1035 | 0.32-0.38 | 0.60-0.90 | 0.040 | 0.050 | | | |
| 1045 | 0.43-0.50 | 0.60-0.90 | 0.040 | 0.050 | | | |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| Grade | condition | Ultimat | Yield | Elongation | Rockwell |
| | Strength | Strength | | Hardness |
| | ksi Mpa | ksi Mpa | % | B Scale |
| 1020 | HR | 50 345 | 32 221 | 25 | 55 |
| CW | 70 483 | 60 414 | 5 | 75 |
| SR | 65 448 | 50 345 | 10 | 72 |
| A | 48 331 | 28 193 | 30 | 50 |
| N | 55 379 | 34 234 | 22 | 60 |
| 1025 | HR | 55 379 | 35 241 | 25 | 60 |
| CW | 75 517 | 65 448 | 5 | 80 |
| SR | 70 483 | 55 379 | 8 | 75 |
| A | 53 365 | 30 207 | 25 | 57 |
| N | 55 379 | 36 248 | 22 | 60 |
| 1035 | HR | 65 448 | 40 276 | 20 | 72 |
| CW | 85 586 | 75 517 | 5 | 88 |
| SR | 75 517 | 65 448 | 8 | 80 |
| A | 60 414 | 33 228 | 25 | 67 |
| N | 65 448 | 40 276 | 20 | 72 |
| 1045 | HR | 75 517 | 45 310 | 15 | 80 |
| CW | 90 621 | 80 552 | 5 | 90 |
| SR | 80 552 | 70 483 | 8 | 85 |
| A | 65 448 | 35 241 | 20 | 72 |
| N | 75 517 | 48 331 | 15 | 80 |
| 4130 | HR | 90 621 | 70 483 | 20 | 89 |
| SR | 105 724 | 85 586 | 10 | 95 |
| A | 75 517 | 55 379 | 30 | 81 |
| N | 90 621 | 60 414 | 20 | 89 |
| 4140 | HR | 120 855 | 90 310 | 15 | 100 |
| SR | 120 855 | 100 689 | 10 | 100 |
| A | 80 552 | 60 414 | 25 | 85 |
| N | 120 855 | 90 621 | 20 | 100 |
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.
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a
perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate
longitudinal and transversal defects.
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, and 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 you need to
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
