JIS3445 carbon boiler steel tube/ seamless steel tube for boiler use
Product Description
| Material | Carbon Steel and Alloy Steel |
| Section Shape | Round |
| Surface treatment | Oiled, Annealing etc |
| Outer Diameter | 6-65mm |
| Wall Thickness | 1-8mm |
| Seamless Steel Tube Standard | DIN2391, DIN17175, ASTM A106, ASTM A213, ASTM A53, ASTM A312, ASTM A179, SAE 4130. JIS G3445, JIS G3444, JIS G 3461, JIS G3441, JIS G3454 etc |
| Steel Tube Grade | 1010 (10#, STS38,STKM11A,STKM12A,STKM13C, A106 Gr.A,St35.8, St37,St35,E215 etc) 1020 (20#, STPG42,STKM12B,STKM12C,STKM13A,STKM13B,A106Gr.B, A53.B, St45.8,St44, St45, E235 etc) 1045 (45#),St52 (16Mn, E355),30CrMo(4130) |
| Packing Details | 1.Internal wrapped with plastic film. External wrapped with woven bags. 2. wooden boxes to pack. 3. Iron stand. |
| Certification | ISO9001 |
| Delivery condition | BK BKW BKS GBK NBK |
| Length | 1-12m as customer's requestment |
| Dimension tolerance comparision Chart | ||||
| Outside Diameter | GB/T 3639 | DIN2391(EN10305) | RAY steel tube standard | Special standard |
| 6-30mm | +/-0.1 mm | +/-0.08 mm | +/-0.05 mm | +/-0.03 mm |
| 31-40mm | +/-0.15 mm | +/-0.15 mm | +/-0.05 mm | +/-0.03 mm |
| 41-50mm | +/-0.20 mm | +/-0.20 mm | +/-0.05 mm | +/-0.03 mm |
| 51-60mm | +/-0.25 mm | +/-0.25 mm | +/-0.08 mm | +/-0.03 mm |
| 61-65mm | +/-0.30 mm | +/-0.30 mm | +/-0.10 mm | +/-0.05 mm |
| Thickness | +/-0.12 mm | +/-0.10 mm | +/-0.05 mm | +/-0.03 |
The production flow chart of seamless steel tube:
Cold drawn seamless steel tube images
The Chemical composition comparison sheet:
| Steel Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
| 1010 | 0.08-0.13 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.25 | ≤0.25 |
| STKM 11A | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | |||
| 1020 | 0.17-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.050 | ≤0.040 | |||
| STKM13A | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.20 | ≤0.040 | ≤0.040 | ||
| A106 Gr.B | ≤0.25 | ≤0.10 | 0.29-1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.40 |