Dosbarth Llongau BV (Bureau Veritas) yn hawdd yw'r grŵp mwyaf sy'n ymwneud â dosbarthu llongau ac mae'n un o'r cymdeithasau ardystio mwyaf blaenllaw yn y byd.
Gradd dur Dosbarth Llong BV:
gradd BV ABDE, AH32, EH32, DH32,
AH36, EH36, DH36, FH36,
BV AH40, BV DH40 BV EH40 BV FH40,
BV A420, BV D420, BV E420, BV F420,
BV A460, BV D460, BV E460, BV F460,
BV A500, BV D500, BV E500, BV F500,
BV A550, BV D550, BV E550, BV F550,
BV A620, BV D620, BV E620, BV F620,
BV A690, BV D690, BV E690, BV F690.

Gradd BV A420
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd D420Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 420 | 530-680 | 18 |
BV Gradd E420
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd F420
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |

Gradd BV A460
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd D460 Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 460 | 570-720 | 17 |
BV Gradd E460
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd F460
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |

Gradd BV A500
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd D500Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 500 | 610-770 | 16 |
BV Gradd E500
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd F500
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |

BV Gradd A550
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd D550 Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 550 | 670-830 | 16 |
BV Gradd E550
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd F550
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |

Gradd BV A620
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
DNV Gradd D620 Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 620 | 720-890 | 15 |
BV Gradd E620
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
Gradd BV F620
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |

BV Gradd A690
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.21 | 0.55 | 1.70 | 0.030 | 0.030 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
DNV Gradd D690 Adeiladu Llongau Plât Dur Cyfansoddiad Cemegol ac Eiddo Mecanyddol
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd E690
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.20 | 0.55 | 1.70 | 0.025 | 0.025 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
BV Gradd F690
| C uchafswm | Si max | Mn | P max | S max | N uchafswm. |
| 0.18 | 0.55 | 1.60 | 0.020 | 0.020 | 0.020 |
| Cryfder Cynnyrch (MPa) min. | Cryfder Tynnol (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
Ymweliad Cwsmer GNEE

TÎM GNEE

Ymweliad Swyddfa Cwsmer GNEE

Arddangosfa GNEE

Tîm Gwerthu GNEE

Tagiau poblogaidd: plât adeiladu llongau dosbarth bv, gweithgynhyrchwyr plât adeiladu llongau dosbarth bv Tsieina, cyflenwyr, ffatri











