.

1、GB/T 12233-2006《通用阀门铁质截止阀与升降式止回阀》

2、GB/T 12235-2007《通用阀门 法兰连接钢制截止阀与升降止回阀》

3、JB/T53174-94《截止阀 产品质量分等》

4、JB/T53165-92《高压平衡截止阀》

5、GB/T 587-2008《船用法兰青铜截止阀》

6、GB/T 590-2008《船用法兰铸铁截止阀》

7、GB/T 8464-2008《铁制和铜制螺纹连接阀门》

8、GB8465.2-87《内螺纹连接闸阀、截止阀、球阀、止回阀 基本尺寸 铁制截止阀》

DR20-4-L5X/5Y     DR20-4-L5X/10Y  DR20-4-L5X/20Y

DR20-4-L5X/31.5Y  DR20-4-L5X/35YM

DR20-5-L5X/5Y     DR20-5-L5X/10Y  DR20-5-L5X/20Y

DR20-5-L5X/31.5Y  DR20-5-L5X/35YM

DR20-6-L5X/5Y     DR20-6-L5X/10Y  DR20-6-L5X/20Y

DR20-6-L5X/31.5Y  DR20-6-L5X/35YM

DR20-7-L5X/5Y     DR20-7-L5X/10Y  DR20-7-L5X/20Y

DR20-7-L5X/31.5Y  DR20-7-L5X/35YM

DR30-4-L5X/5Y     DR30-4-L5X/10Y   DR30-4-L5X/20Y

DR30-4-L5X/31.5Y  DR30-4-L5X/35YM 

DR30-5-L5X/5Y     DR30-5-L5X/10Y   DR30-5-L5X/20Y   

DR30-5-L5X/31.5Y  DR30-5-L5X/35YM 

DR30-6-L5X/5Y     DR30-6-L5X/10Y   DR30-6-L5X/20Y

DR30-6-L5X/31.5Y  DR30-6-L5X/35YM

DR30-7-L5X/5Y     DR30-7-L5X/10Y   DR30-7-L5X/20Y

DR30-7-L5X/31.5Y  DR30-7-L5X/35YM