Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Delivery Time | 7DAYS |
| Packaging Details | Plywood case,Bundle |
| OD | 3/4" (19.05), 1"(25.4) , 1-1/4"(31.75), 1-1/2"(38.1), 2" (50.8), 2-1/2"(63.5) , 3" (76.2) |
| USAGE | Heat Exchanger Tube, Boiler Tube |
| STANDARD | EN10305-1 |
| MATERIAL | ST37.4, ST52.4,E235+N |
| WT | 0.89,1,1.24,2.11MM.... |
| Brand Name | YUHONG |
| Model Number | E235+N,ST37.4,ST52.4 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 7DAYS |
| Packaging Details | Plywood case,Bundle | OD | 3/4" (19.05), 1"(25.4) , 1-1/4"(31.75), 1-1/2"(38.1), 2" (50.8), 2-1/2"(63.5) , 3" (76.2) |
| USAGE | Heat Exchanger Tube, Boiler Tube | STANDARD | EN10305-1 |
| MATERIAL | ST37.4, ST52.4,E235+N | WT | 0.89,1,1.24,2.11MM.... |
| Brand Name | YUHONG | Model Number | E235+N,ST37.4,ST52.4 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | EN10305-1 E235+N Seamless Tube ，NBK Seamless Tube ，Automobile Usage Seamless Tube | ||
EN10305-1 E235+N NBK Precision Seamless Tube For Automobile Usage
| Steel Grade | Chemical Components (%) | ||||||
| Steel Name | Steel Number | C max. | Si max. | Mn max. | P max. | S max. | AL min. |
| E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.025 | / |
| E355 | 1.058 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 | / |
The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:
| Designation | Symbol | Description |
| Cold drawn/hard | +C | No heat treatment after the final cold drawing process. |
| Cold drawn/soft | +LC | After the final heat treatment there is a suitable drawing pass. |
| Cold drawn and stress relieved | +SR | After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere. |
| Annealed | +A | After the final cold drawing process the tubes are annealed in a controlled atmosphere. |
| Normalized | +N | After the final cold drawing operation, the tubes are normalized in a controlled atmosphere. |
Delivery Condition Symbol in accordance with EN10305 and DIN2391
| Symbol in accordance with EN 10305 | Symbol in accordance with DIN2391 |
| +C | BK |
| +LC | BKW |
| +SR | BKS |
| +A | GBK |
| +N | NBK |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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