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[China]
Trade Verify
Address: 168 Qiangao Road, Liangxi District, Wuxi,China
Contact name:Ava
WUXI SYLAITH SPECIAL STEEL CO.,LTD |
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Verified Suppliers
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JIS G3445 STKM11A, STKM 12A, STKM 12C, STKM 13A Cold Drawn Seamless
Steel Tube
Product Description
Standard: JIS G3445
Size: 6mm-340mm
W.T.: 1mm-50mm
Shape: Round
Technique: Cold drawn, cold rolled or hot rolled.
Length: Single random length/ Double random length or as customer’s actual request max length is 10m
Grade: STKM 11A, STKM 12A, STKM 12C, STKM 12B, STKM 13A, STKM 13B, STKM 13C, STKM 15A, STKM 17A
Marking
Each tube having passed the inspection shall be legibly marked with the following items, the order of arranging the items is not specified.
However, for smaller tubes or on a request from the purchaser, tubes may be bundled together and marked for each bundle by suitable means.
(1) Designation of grade
(2) Letter symbol indicating the manufacturing process
Note:
§ Mill test certificates will be issued according to EN10204.3
§ The tubes Shall be Seamless or Welded.
Protection and Packing:
§ Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.
§ The tubes shall be delivered with a temporary corrosion protection. The type of protection shall be at the discretion of the manufacturer
World standard Comparative with JIS G3445
NUBER | GRADE | NUBER | GRADE | NUBER | GRADE | NUBER | GRADE | |
D 3517 |
Grade 11 A |
STKM 11 A | A513 | MT1010 |
G-3445 |
STKM11A |
- |
- |
A519 | MT1010 | |||||||
|
Grade 12A |
STKM 12 A | A513 | MT1015 |
|
STKM12A |
980 |
CDS-3 |
A519 | MT1015 | |||||||
| Grade 12 B | STKM 12 B | - | - |
| STKM12B | - | - |
|
Grade 12C |
STKM 12C | A512 |
MT1015 |
|
STKM12C |
- |
- |
A513 | ||||||||
|
Grade 13 A |
STKM 13 A | A512 | MT 1025 |
|
STKM13A |
- |
- |
A513 | MTX1025 | |||||||
A519 | MT 1025 | |||||||
| Grade13B | STKM 13 B | - | - |
| STKM13B | 980 | CDS-4 |
| Grade13 C | STKM 13 C | - | - |
| STKM13C | - | - |
|
Grade14 A |
STKM 14 A | A513 | MT1030 |
|
STKM14A |
1717 | CDS- 103 |
A519 | MT1030 | |||||||
| Grade14 B | STKM 14 B | - | - |
| STKM14B | - | - |
| Grade14 C | STKM 14 C | - | - |
| STKM14C | - | - |
| Grade15 A | STKM 15 A | A513 | MT1033 |
| STKM15A | 1717 | CDS- 105 |
| Grade15 C | STKM 15 C | - | - |
| STKM15C | - | - |
| Grade16 A | STKM 16 A | A519 | MT1040 |
| STKM16A | 980 | CDS-5 |
| Grade16 C | STKM 16 C | - | - |
| STKM16C | - | - |
|
Grade17 A |
STKM 17 A |
A519 |
MT1050 |
|
STKM17A | 980 | CDS-7 |
1717 | CDS- 107 | |||||||
| Grade17 C | STKM 17 C | - | - |
| STKM17B | - | - |
| Grade18 A | STKM 18 A | A519 | MT1524 |
| STKM18A | 980 | CDS-9 |
| Grade18 B | STKM 18 B | - | - |
| STKM18B | - | - |
| Grade18 C | STKM 18 C | - | - |
| STKM18C | - | - |
| Grade19 A | STKM 19 A | - | - |
| - | - | - |
| Grade19 C | STKM 19 C | - | - |
| - | - | - |
| Grade20 A | STKM 20 A | - | - |
| - | - | - |
Chemical Composition
Grade | Unit % | |||||
| C | Si | Mn | P | S | Nb or V | |
| STKM 11A | 0.12 max. | 0.35 max. | 0.60 max. | 0.040 max. | 0.040 max. | - |
| STKM 12A |
0.20 max. |
0.35 max. |
0.60 max. |
0.040 max. |
0.040 max. |
- |
| STKM 12B | ||||||
| STKM 12C | ||||||
| STKM 13A |
0.25 max. |
0.35 max. |
0.30~0.90 |
0.040 max. |
0.040 max. |
- |
| STKM 13B | ||||||
| STKM 13C | ||||||
| STKM 14A |
0.30 max. |
0.35 max. |
0.30~1.00 |
0.040 max. |
0.040 max. |
- |
| STKM 14B | ||||||
| STKM 14C | ||||||
| STKM 15A |
0.25~0.35 |
0.35 max. |
0.30~1.00 | 0.040 max. | 0.040 max. |
- |
| STKM 15C | ||||||
| STKM 16A |
0.35~0.45 |
0.40 max. |
0.40~1.00 | 0.040 max. | 0.040 max. |
- |
| STKM 16C | ||||||
| STKM 17A |
0.45~0.55 |
0.40 max. |
0.40~1.00 | 0.040 max. | 0.040 max. |
- |
| STKM 17C | ||||||
| STKM 18A |
0.18 max. |
0.55 max. |
1.50 max. |
0.040 max. |
0.040 max. |
- |
| STKM 18B | ||||||
| STKM 18C | ||||||
| STKM 19A |
0.25 max. |
0.55 max. |
1.50 max. | 0.040 max. | 0.040 max. |
- |
| STKM 19C | ||||||
| STKM 20A | 0.25 max. | 0.55 max. | 1.60 max. | 0.040 max. | 0.040 max. | 0.15 max. |
Mechanical Properties
| Designation | Elongation % | Bending strength |
Tensile strength N/П {kgf/П} |
Yield point or proof N/П {kgf/П} |
Flattening strength Distance between flat plates (H) (D is outside dia. of the tube) | |||||
No. 4,
No. 11
No. 12
test pieces Longitudinal direction | No. 4,
No. 5 test pieces Transverse direction
|
Bend angle | Inside radius
(D is outside dia. of the tube) | ||||
| STKM11A | 290{30} min. | - | 35 min. | 30 min. | 1/2 D | 180 | 4 D |
| STKM12A | 340{35} min. | 175{18} min. | 35 min. | 30 min. | 2/3 D | 90 | 6 D |
| STKM12B | 390{40} min. | 275{28} min. | 25 min. | 20 min. | 2/3 D | 90 | 6 D |
| STKM12C | 470{48} min. | 355{36} min. | 20 min. | 15 min. | - | - | - |
STKM13A | 370{38} min. | 215{22} min. |
30 min. |
25 min. |
2/3 D |
90 |
6 D |
STKM13B | 440{45} min. | 305{31} min. |
20 min. |
15 min. |
3/4 D |
90 |
6 D |
STKM13C | 510{52} min. | 380{39} min. |
15 min. |
10 min. |
- |
- |
- |
STKM14A | 410{42} min. | 245{25} min. |
25 min. |
20 min. |
3/4 D |
90 |
6 D |
| STKM14B | 500{51} min. | 355{36} min. | 15 min. | 10 min. | 7/8 D | 90 | 8 D |
STKM14C | 550{56} min. | 410{42} min. |
15 min. |
10 min. |
- |
- |
- |
STKM15A | 470{48} min. | 275{28} min. |
22 min. |
17 min. |
3/4 D |
90 |
6 D |
STKM15C | 580{59} min. | 430{44} min. |
12 min. |
7 min. |
- |
- |
- |
STKM16A | 510{52} min. | 325{33} min. |
20 min. |
15 min. |
7/8 D |
90 |
8 D |
STKM16C | 620{63} min. | 460{47} min. |
12 min. |
7 min. |
- |
- |
- |
STKM17A | 550{56} min. | 345{35} min. |
20 min. |
15 min. |
7/8 D |
90 |
8 D |
STKM17C | 650{66} min. | 480{49} min. |
10 min. |
5 min. |
- |
- |
- |
STKM18A | 440{45} min. | 275{28} min. |
25 min. |
20 min. |
7/8 D |
90 |
6 D |
STKM18B | 490{50} min. | 315{32} min. |
23 min. |
18 min. |
7/8 D |
90 |
8 D |
| STKM18C | 510{52} min. | 380{39} min. | 15 min. | 10 min. | - | - | - |
| STKM19A | 490{50} min. | 315{32} min. | 23 min. | 18 min. | 7/8 D | 90 | 6 D |
| STKM19C | 550{56} min. | 410{42} min. | 15 min. | 10 min. | - | - | - |
| STKM20A | 540{55} min. | 390{40} min. | 23 min. | 18 min. | 7/8 D | 90 | 6 D |
Appearance
⚫ The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube
⚫ The tubes shall be free from defects detrimental to practical use.
⚫ The surface finish of the tubes, when especially specified shall be agreed upon by the purchaser and the manufacturer.
Tolerance on Outside Diameter
| Division | Tolerances on outside diameter |
| No. 1 | Under 50mm ±0.5mm |
| 50mm or over ±1% | |
| No. 2 | Under 50mm ±0.25mm |
| 50mm or over ±0.5% | |
No. 3 | Under 25mm ±0.12mm |
| 25mm or over to and excl. 40mm ±0.15mm | |
| 40mm or over to and excl. 50mm ±0.18mm | |
| 50mm or over to and excl. 60mm ±0.20mm | |
| 60mm or over to and excl. 70mm ±0.23mm | |
| 70mm or over to and excl. 80mm ±0.25mm | |
| 80mm or over to and excl. 90mm ±0.30mm | |
| 90mm or over to and excl.100mm ±0.40mm | |
| 100mm or over ±0.50% |
Tolerance on Thickness
| Division | Tolerances on wall thickness |
No. 1 | Under 4mm |
| +0.6mm | |
| -0.5mm | |
| 4mm or over | |
| 15% | |
| -12.50% | |
No. 2 | Under 3mm |
| ±0.3mm | |
| 3mm or over |
Detailed Photo
Factroy Pictures
Pipe & Tube Processing
Application
STKM 11A Seamless tubes
JIS G3445 STKM 11A, STKM 12A, STKM 12C, STKM 13A, STKM 13C, STKM
15A, STKM 15C, STKM 17A, STKM
17C carbon steel tubes used for machinery, automobiles, bicycles,
furniture, appliances and other machine parts.
Packaging & Shipping
Certificates
FAQ
Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi Sylaith Special Steel Co.,Ltd is a manufacturer of
steel pipe and tube since 2010. We've gained our Export Right and
become an integrated company of industry and trade in order to
satisfy buyer's multi-request on different material and products.
Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless
Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded
pipes can also be available
Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And
to get free samples, you need to send us you detailed receiving
address (including post code) and your DHL/FedEx/UPS account for
collecting samples, courier cost will be paid in your side.
Q4. CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings
that will be most satisfy you.
Q5: HOW TO VISIT YOUR FACTORY?
A5: Most of the main cities have flights to Shanghai; you can take
flight to Shanghai Putong/Hongqiao International Airport.
If you come from Hongkong, it will take 2 hours by flight (every
day 5 flight around noon time).
