Yuhong Holding Group Co., LTD.
| Lieu d'origine: | Chine |
| Nom de marque: | YUHONG |
| Certification: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Numéro de modèle: | E235+N, ST37.4Je suis ST52.4 |
| Quantité de commande min: | 100KGS |
|---|---|
| Détails d'emballage: | CAISSE DE CONTREPLAQUÉ, PAQUET |
| Délai de livraison: | 7 jours |
| Conditions de paiement: | L/C, T/T |
| Surdose: | La taille de l'appareil doit être comprise entre 4 et 5 pouces. | Utilisation: | Tube d'échangeur de chaleur, tube de chaudière |
|---|---|---|---|
| La norme: | EN10305-1 | Matériel: | ST37.4, ST52.4, E235+N |
| WT: | 0.89,1,1.24,2.11MM.... | ||
| Mettre en évidence: | Pour les tubes sans couture,Tubes sans soudure NBK,Utilisation dans l'automobile |
||
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 |
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