DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-09-02

DQ MARINE PRODUCT DATA

Marine Steel Suction Inlet CB/T495-1995 Type A/AS

Category
GB/CB/CBM Valve
Origin
China
Marine Steel Suction Inlet CB/T495-1995 Type A/AS

Product Overview

DQ Marine supplies marine equipment and technical products for shipyards, vessel operators, offshore projects and industrial buyers worldwide.

Key Specifications

Category GB/CB/CBM Valve
Model / SKU marine-suction-inlet-cb-t495-1995-type-a-as
Standard CB/T495-1995, CB/T4230-2013, CBM1036-1981
Origin China

Technical Information

China Marine Steel Suction Inlet CB/T495-1995 Type A/AS:

Marine Suction Inlet is used as the inlet of the oil tank, water tank in all kinds of vessels, also called as bell mouth.

Technical Specification:

Design Standard: CB/T495-1995, CB/T4230-2013, CBM1036-1981

Flange Standard: GB569, GB2501 or JIS, DIN, ANSI standard.

Type Material Connection Type Nominal Size(mm) Suitable Medium
A Carbon Steel Flange type, Flange standard: GB569 20-300 Fresh Waer, Sea Water, Oil
AS Carbon Steel Flange type, Flange standard: GB2501
B Cast Iron Flange type, Flange standard: GB569 80-500
BS Cast Iron Flange type, Flange standard: GB2501
C Carbon Steel Welding Type 20-300

*When type A,AS is used on the water tank, the suction inlet should be with hot dip galvanizing.

*When type B, BS is used on the oil tank, the bottom of suction inlet should be welding with a ring of brazing.

*The suction inlet should pass the watertight test with 3minutes, and without leakage.

Main Parts & Material:

Flange---Carbon Steel

Body---Carbon Steel

Support---Carbon Steel

Main Size List(mm):

For Type A:

DN Dw D3 H H1 δ D D1 D2 b d0 f n Th.
20 25 100 110 15 4 95 68 48 13 13 1 4 M12
25 30 105 115 105 73 56 14
32 38 110 120 115 83 64 15 15 6 M14
40 45 125 125 4.5 125 93 74
50 57 130 130 135 103 84
65 70 160 140 20 155 123 104 14
80 89 220 175 5 170 138 118 8
100 108 250 185 190 158 138
125 133 280 195 25 215 183 164 10
150 159 320 205 240 208 190 12
200 219 350 230 40 6 295 264 247 15
250 273 480 315 45 365 327 306 16 17 14 M16
300 325 550 330 50 8 430 386 360 19 21 M20

For Type AS:

DN Dw D3 H H1 δ D D1 D2 b d0 f n Th.
20 26 100 110 15 4 90 65 50 14 11 2 4 M10
25 32 105 115 100 75 60
32 42 110 120 120 90 70 16 14 M12
40 48 125 125 4.5 130 100 80 3
50 60 130 130 140 110 90
65 76 160 140 20 160 130 110
80 89 220 175 5 190 150 128 18 18 M16
100 114 250 185 210 170 148
125 140 280 195 25 240 200 178 20 8
150 168 320 205 265 225 202
200 219 350 230 40 6 320 280 258 22
250 273 480 315 45 375 335 312 24 12 M20
300 325 550 330 50 8 440 395 365 22 4