cold drawn seamless steel pipes for structural purpose
Standard & Material |
Carbon Steel |
ASTM A519 Standard |
MT1010, MT1020, 1008, 1010, 1018, 1020, 1025, 1030, 1045, 1518 |
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JIS G3445 Standard |
STKM11A STKM12A STKM12B STKM12C STKM13A STKM13B STKM13C STKM14A STKM14B STKM14C STKM15A STKM15C STKM16A STKM16C STKM17A STKM17C STKM18A STKM18B STKM18C STKM19A STKM19C STKM20A |
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JIS G3473 Standard |
STC370, STC440, STC510A, STC510, STC540, STC590A, STC590B |
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DIN 2391 Standard |
St 35, St45, St52 |
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EN 10297-1 Standard |
E235, E275, E315, E355, E470 |
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EN 10305-1 Standard |
E215, E235, E355 |
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EN 10305-4 Standard |
E215, E235, E355 |
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BS 6323-3 Standard |
HFS 3, HFS 4, HFS 5, HFS 8 |
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NF A49-311 |
TU 37-b, TU 52-b, TU 56-b, TU XC35 |
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Alloy Steel |
ASTM A519 Standard |
1345, 3140, 4130, 4135, 4140, 4150, 4320, 4340, 5120, 5130 |
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JIS G3429 Standard |
STH11, 12 STH21, 122 STH31 |
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JIS G3441 Standard |
SCR420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM440TK |
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Stainless Steel |
ASTM A511 Standard |
MT304, MT304L, MT310S, MT316, MT316L, MT317, MT321, MT347, MT403, MT410, MT431 |
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ISO Standard |
NACE MR-0175 |
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Size |
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Size Range |
Tolerance |
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OD |
6-325mm |
-0.035 -- +0.045mm |
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ID |
2-250mm |
±0.035mm |
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WT |
1-32mm |
depends on sizes | ||
Length |
random or fixed length |
3.5mm |
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Straightness |
0.15:1000, 0.4:1000, 0.5:1000 1:1000 or customized |
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Surface Roughness |
Ra 0.02—0.4μm |
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Widely used in Machinery, Automotive & Aerospace Industry,Bicycles, Furniture, Apparatus, other mechanical parts and structures and so on.
1. Q: What’s the delivery condition of seamless cold drawn mechanical tubing?
A:
1)BK (+C) Cold finished/hard (cold finished as drawn).
2) BKW (+LC) Cold finished/soft
3) BKS (+SR) Cold finished/stress relieve annealed.
4) GBK (+A) Annealed.
5) NBK (+N) Normalized.
2. Q: What’s the surface roughness of seamless mechanical tubing you could do ?
A:Surface Roughness: a=0.02~0.4micron or depends on the customer’s requirement.
3.Q: How’s the straightness of cold drawn mechanical tubes?
A: Straightness:0.3~0.8mm/1000mm
4.Q: Shall we get the discount if repeating our orders?
A: Of course, biggest discount will be shared with the repeat customers.
Seamless Steel Pipe mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the cold drawn seamless steel pipes for structural purpose mechanical properties of the corresponding standard specifies. Seamless Steel Pipe surface quality, appearance, dimensional accuracy cold drawn seamless steel pipes for structural purpose better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
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Seamless Steel Pipe deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, cold drawn seamless steel pipes for structural purpose laminating steel plates, etc, so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.