Flange 法兰 Flange
法兰的分类
1按化工行业标准分
整体法兰（IF）、螺纹法兰（Th）、板式平焊法兰（PL）、带径对焊法兰（WN）、带颈平焊法兰（SO）、承插焊法兰（SW）、对焊环松套法兰（PJ/SE）、平焊环松套法兰（PJ/RJ）、衬里法兰盖（BL（S））、法兰盖（BL）。
2按石化行业标准分
螺纹法兰（PT）、对焊法兰（WN）、平焊法兰（SO）、承插焊法兰（SW）、松套法兰...
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Types of Pressure Tanks
The are 3 main types of pressure tanks. These are air-over-water, bladder and diaphragm pressure tanks. Bladder and diaphragm pressure tanks are relatively smaller than air-over-wa...
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How to Calculate Fixture Units by Plumbing Code
Things You'll Need
Current Edition of the Uniform Plumbing Code*
Check with your local building department to determine what code they have adopted. Sometimes your local jurisdic...
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Unit 11 Roofing Works Part two Construction of Main Frame
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Unit 10 Quality Control Part two Construction of Main Frame
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