Cold Drawn Seamless Steel Pipe Precision Carbon Steel Tube DIN2391
EN10305 ST37 ST52
DIN2391 EN10305 ST37 ST52 Seamless Precision Carbon Steel Tube
1,Standards: ASTM / DIN / EN / GOST / SAE / JIS etc
2,Material Grade: Carbon Steel / Alloy Steel or According to
requirements.
Size: (mm)
OD: 19.05 mm
WT: 2.11 mm;
Length: max 25m
Description:
Product name: Heat Exchanger Tubes / Cold Drawn / ERW
Standard executived: ASTM / DIN / EN / GOST / SAE / JIS etc
(ASTM A179,ASTM A199, ASTM A200, ASTM A213, DIN 17175,JIS G3462,JIS
G3458 )
Outside diameter:19.05mm
Wall Thickness:2.11mm
Length:6m-25m,also can be manufactured according to customers'
requirements
Type:Cold Drawn or ERW
Ends:Plain ends or bevel ends
Delivery Conditions: BK,BKS,BKW,NBK,GBK( As drawn, quenched and
tempered, normalized, annealed, stress-relieved)As different
requirements,It including pickling,etc. AS per Standard.
Coating for protection:black painting,anti-rust oiled or
varnish,also can be required according to customers' requirements
Factory test and other terms:
1.Hydrostatic or Nondestructive Electric Test
2.Heat Treatment: according to Standard
3.Surface Condition:According to Standard.
4.Grain Size:According to standard
5.Sampling:flattening,flaring,grain size,Marking
6.we provide bevel end,plastic cap, varnish coating, oiled or black
painted to prevent rustand other packing
service.
Main Specification Details:
| Name | Cold drawn or ERW straight steel tubes and pipes for heat exchanger |
| Standard | Meet or exceed ASTM,ASME,API,ANSI and DIN standards. ASTM A106/A179/A192/A210/A213/A519 etc. DIN2391/DIN17175/EN10305 etc GB8162/GB8163/GB3639 etc |
| Material | A179,St35,St45,St52,E215,E235,E355,10,20, A106,A179,A192,A210,T11,T22,T12 etc |
| Size | Outer diameter:6-114.0mm Wall thickness:0.5-15mm Length:max 2400mm,generally 6000mm |
| Application | Cold drawn or cold rolled precision seamless steel tubes for
hydraulic pressure and pneumatic services.
For Auto use,machinery use,oil cylinder tube,motorcycle shock
reducer use,auto shock
reducer inner cylinder,etc.
Seamless steel pipes for low and medium pressure boiler, high
pressure boiler, ship-building,Liquid service, petroleum cracking, chemical
fertilizer equipment, Drawing-oil-equipment and structure purposes. |
| Business scope | DIN series cold drawn precision seamless steel tubes DIN series cold rolled precision seamless steel tubes Related coated and galvanized steel tubes Rustproof phosphyorylated tube |
| Main characteric | No Oxidation Layer on the outer and inner walls; No Leakage under high pressure; No Crake under flating and flattening; No distortion after cold bending; High precision high cleanness; Excellent brightness cold drawn and hot finished Superior performance for high pressure and temperature uses Black finish and hot dip galvanized Excellent corrosion resistance |
Delivery condition:
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold
forming and, thus, have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving
limited deformation. Appropriate further processing allows a
certain degree of cold forming. (e.g. bending, expanding). |
| Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process.
Subject to appropriate processing conditions, the increase in the
residual stresses involved enables both forming and machining to a
certain degree. |
| Annealed | GBK | The last cold forming process is followed by annealing in a
controlled atmosphere. |
| Normalized | NBK | The last cold forming process is followed by annealing above the
upper transformation point in a controlled atmosphere. |
All other tubes applicable for boiler and heat exchanger tube we
can produce ,
| Chinese Standard | Steel Grade/ No. | American Standard | Steel Grade/ No. |
| GB5310 | 20G,15MoG,12CrMoG, 12Cr2MoG,15CrMoG, 12Cr1MoVG, | ASTM A106 | GR. A,B,C |
| GB9948 | 10,20,12CrMo,15CMo | ASTM A53 | GR.A,B |
| GB3087 | 10,20 | ASTM A192 | |
| | ASTM A179 | |
| | ASTM A210 | A-1,C |
| | ASTM A333 | GR.1,GR3,GR6 |
| | ASTM A334 | GR.1,GR3,GR6 |
| | ASTM A209 | T1, Ta, Tb |
| German standard | Steel Grade/ No. | Japanese standard | Steel Grade/ No. |
| DIN17175 | ST35.8, ST45.8 | JIS G3454 | STPG370,STPG410 |
| DIN1629 | ST37.0, ST44.0, ST52.0 | JIS G3461 | STB340, STB410, STB440 |
| British Standard | Steel Grade/ No. | European standard | Steel Grade/ No. |
| BS3059-Ⅰ | 320 | EN10216-1 | P195TR1/TR2,P235TR1/TR2,
P265TR1/TR2 |
| BS3059-ⅡS1/S2; TC1/TC2 | 360,440, | EN10216-2
TC1,TC2 | 195GH,P235GH,
P265GH, |
Applications:
1,For evaporator, heat exchangers, condensers, heat transfer
equipment and similar pipes.
2,Widely used in the mechanical treatment field, petrochemical
industry, transport and construction field
3,Ordinary structural purposes and mechanic structural purposes,
for example in construction field, fulcrum bearing etc;
4,The transportation of fluids in the projects and big equipments,
for example transport of water, oil, gas etc
5,Can be used in low and medium pressure boiler for the
transportation of fluids, for example steam tube, big smoke tube,
small smoke tube, generating tube etc
Competitive Advantage:
Asia Leading Steel Pipe & Tube Manufacturer with more than
250,000Tons/Year, >60% shipped to more than 35 Countries.We aims
at manufacturing quality pipes & tubes with reasonable and
competitive price, good quality for our global customers.
| DIN 2391/EN 10305-4 |
|---|
Cold drawn or cold rolled precision seamless steel tubes
Inside precision seamless tubes for hydraulic pressure and
pneumatic services |
|---|
| Application: | for Auto use;for machinery use;Oil cylinder tube;Motorcycle shock
reducer steel tubes;Auto shock reducer inner cylinder |
|---|
| Size(mm): | O.D.:4.0-76 W.T.:0.5-6 |
|---|
| Grade | Chemical Composition(%): |
| C max | Si max | Mn | P max | S max |
| St 35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| St 45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| St 52 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 |
| Steel grade | Chemical Composition(%): |
| Steel name | Steel number | C max | Si max | Mn | P max | S max | Al min |
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
Mechanical Properties(Mpa):
Steel grade | BK | BKW | BKS | GBK | NBK |
RmN/mm
min | min | RmN/mm
min | min | N/mm
min | ReH
N/mm
min | min | N/mm
min | min | N/mm
min | ReH
N/mm
min | min |
| St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
| St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 235 | 21 |
| St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | 22 |
| Steel grade | Minimum values for the delivery condition |
| Steel name | Steel number | + C | + LC | + SR | + A | + N |
| Rm Mpa | A% | Rm Mpa | A% | Rm Mpa | ReH Mpa | A% | ReH Mpa | A% | Rm Mpa | ReH Mpa | A% |
| E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290-430 | 215 | 30 |
| E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
The tubes of this standard are exported to Turkey,Germany,France,Uk
etc Since 2005
