NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD
NEW-ERA STEEL TUBE HOLDING NINGBO PIPEWAY TRADE CO.,LTD
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Cold Drawn Precision Steel Tube Seamless 2 - 12m Length With GB/T3639
Cold drawn Precision Mechanical Seamless Steel Pipes
Steel Grade/Steel Material:10#, 20#, 45#, Cr-Mo alloy, 16Mn, SAE1010, SAE1020, SAE1045, SKTM11,37Mn5,40Cr, ST35, ST52 etc
Steel pipe standard:GB8713, GB3639, DIN2391, EN10305-1, EN10305-4, JIS-G3445, ASTM A519, ASTM A192, ASTM A179
size:
OD:10.00—110.00mm
WT:1.00—8.00mm
Length: 5.8m, 6m,9m,or as required.
Production Processs:
RAW MATERIAL
↓
INCOMING INSPECTION
↓
STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN
↓
ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE CHECK↔ COLD DRAWING ← LUBRICATING
↓
FINAL INSPECTION→BUNDING→STORAGE
Technique:
1) Hot Rolled
2) Cold Drawn
3) Cold Rolled
Characteristic:
Good concentricity
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
QUALITY ASSURANCE
Application:
1) shock absorber for motorcycle and automobile
2) hydraulic gas cylinder
3) precision machine precision pipe part
4) other auto pipe parts
| Steel grade | Minimum values for the delivery conditionab | ||||||||||||
| +CC | +LCC | +SR | +Ad | +N | |||||||||
| steel name | steel number | RmMPa | A % | RmMPa | A % | RmMpa | ReHMPa | A % | RmMPa | A % | Rm MPa | ReHCMPa | A % |
| E155 | 1.0033 | 400 | 6 | 350 | 10 | 350 | 245 | 18 | 260 | 28 | 270 to 410 | 155 | 28 |
| E195 | 1.0034 | 420 | 6 | 370 | 10 | 370 | 260 | 18 | 290 | 28 | 300 to 440 | 195 | 28 |
| E235 | 1.0908 | 490 | 6 | 440 | 10 | 440 | 325 | 14 | 315 | 25 | 340 to 480 | 235 | 25 |
| E275 | 1.0225 | 560 | 5 | 510 | 8 | 510 | 375 | 12 | 390 | 21 | 410 to 550 | 275 | 21 |
| E355 | 1.0580 | 640 | 4 | 590 | 6 | 590 | 435 | 10 | 450 | 22 | 490 to 630 | 355 | 22 |
| a. Rm: tensile strength ; ReH: upper yield strength (but see 11.1); A: elongation. For symbols for the delivery condition see Table 1. | |||||||||||||
| b. 1 Mpa = 1 N/mm2 | |||||||||||||
| c. Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strengths. For calculation purposes the following relations are recommended: | |||||||||||||
| —— For delivery condition +C: ReH ≥0.8 Rm | |||||||||||||
| —— For delivery condition +LC: ReH ≥0.7 Rm | |||||||||||||
| d. For calculation purposes the following relations is recommended: ReH ≥0.5 Rm | |||||||||||||
| e. For tubes with outside diameter ≤ 30 mm and wall thickness≤ 3mm, the ReH minimum values are 10 Mpa lower than the values given in this Table. | |||||||||||||
Tags:cold drawn,seamless,precision steel tube,E215,EN10305-1,hydraulic tubing,Precision tubing,cold drawn seamless steel tubes.
E215 precision tubes,E215 Steel tubes,E215 Round tubing