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Model Main bore
Working pressure
MPa (psi)
Operating Pressure


Connection type Dimension mm




Top Bottom OD Height
FH18-21 179


21(3000) 8.4~10.5 studded fanged 737 743 1350
FH18-35 35(5000) 737 790 1572
FH18-70/105 70(10000) 1092 1136 5070
FH23-21 228


21(3000) 900 830 2104
FH23-35 35(5000) 998 1200 3540
FH28-21 279


21(3000) 1013 838 2574
FH28-35 35(5000) 1138 1081 4410
FH28-35/70 35(5000) 1138 1096 4451
FH28-70/105 70(10000) 1448 1420 10800
FH35-35 346


35(5000) 1270 1160 6400
FH35-35/70 35(5000) 1270 1227 6843
FH35-70/105 70(10000) 1640 1664 15110
FH43-35 425


35(5000) 1524 1320 10834
FH48-70 476


70(10000) 1937 1882 27161

Annular BOP consists of body, upper housing, sealing element, dust-proof ring, and piston. It provides a rugged, reliable preventer and ease of service and widely used Offshore (subsea and surface) and onshore.

Annular BOP is compact, seal any size kellys, drill pipe, tool joints, drill collars, casing or wireline. Sphericals also provide positive pressure control for stripping drill pipe into and out of the hole.

Annular BOP is Manufactured in accordance with API Specification 16A, and NACE MR0175 per API Specification 16A, Temperature T20, Standard nitrile packing element: 40°F to 170°F.

Annualr BOP Drawing Annualr BOP Drawing Annualr BOP Drawing

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Buyer’s Guide

Please send us your inquiry with detail item description or with Model number. If there is no packing demand we take it as our regular exported standard packing. We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.

We can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.

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Lake Petro is located in Dongying City, which is famous for Shengli Oilfield and the largest manufacturing hub of petroleum equipment in China. Following the principle of “quality first, science and technology innovated, people oriented”, every Lake Petro person is sparing no effort to provide the customers with best products and services. Our products are based on advanced production line and testing equipment, our products are designed and manufactured according to certification of API, ISO, GOST, etc.