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Marine Manhole Cover Type B

  • China (Mainland)

  • Deyuan Marine

  • CB/T19-2001 B

  • Bolted and welded

  • steel

  • CB/T19-2001

  • Flush, Raised,Sunk

  • 10/12mm

  • iron pallet

  • 10-60days according to the quantiy and the required certificate


Marine Manhole Cover  Type B


Product Description

Standard: CB/T19-2001

Marine Manhole Cover is used for manhole on the oil tanks, water tanks, voil tanks and other tanks on various shipes. It is fixed on the falt positions on the hold bottom, deck and bulkhead.There are Type A,B,C & D. The shape can be round, oval, square.

*Manhole Cover Type B is also called as Marine Flush Manhole Cover.


Main Material:

Cover: Carbon Steel

Coaming: Carbon Steel

Seal Ring: NBR

Bolt, Nut, Washer: Stainless Steel, Caron Steel , Copper


Main Size List(mm):

Model Nominal Size L L1 L2 B B1 B2 S Bolt Weight
LxB Diamter Quantity kgs
B1 450x350 450 470 570 350 370 470 4 M20 16 28.9
6 33.8
8 37.2
10 41.2
600x400 600 630 720 400 420 520 8 20 49.5
10 55.6
12 61.2
14 67.6
800x600 800 820 920 600 620 720 12 26 67.2
14 75.2
16 82.8
18 89.9
B2 800x400 (Oval) 800 830 930 400 430 530 12 24 56.8
14 63.2
16 69.2
18 76.2




Packaging & Shipping

Package: Iron Pallet

Shipping: by sea, by air.




Our Services


One-Stop Service: We supply all kinds of marine and offshore products, from securing the order to final delivery, we work hard to make sure everything goes as required and with high standard quality.


High quality: We are here to provide you with safe and reliable goods. Quality is always our main priority, our quality control program make sure that no defect or poor workmanship will be supplied. According to customer's requirement, our quality can meet the rules and standards of International Class Society such as LR, ABS, DNV, GL, BV, NK, KR, RINA, IRS and CCS.


Professional: With more than 7 years of experience in marine and offshore field, our marketing and technical team can assure you that we can understand your requirement well and deal with your inquiry professionally.


Fast Delivery: We cooperate with the reliable logistic partner, including land, air and sea to help us deliver the goods to your hand on time.



Reliable Partner: With 95% clients' satisfactory, we are confident to be your reliable partner.



Company Information

We supply are an ISO 9001-2008 Company Certified by DNVGL, all kinds of marine and offshore products for various vessels including VLCC, FSO, FPSO, LNGC, LPGC, Container Ships, Cargo Liners, Bulk Carriers, Oil Tankers and oil platform, from securing the order to final delivery, we work hard to make sure everything goes as required and with high standard quality.





1. When inquiry, the size, valve name, material, pressure, standard is necessary.

2.All inquiry will be replied within 24 hours