A type interface has the advantages of high strength and has gradually been accepted and selected by the market. The function of 45 degrees elbow is to change the direction of water flow and increase the branch line. 45 degree elbow socket is smooth elbow for drainage. B type iron fittings 45 degree elbow socket has the advantages of high strength, the socket connection features of flexibility and good seismic performance, B type pipe for cast iron pipe is W pipe, can be in the field of on-demand cutting, quick installation, convenient disassembly, convenient maintenance and replacement etc..
B型铸铁管件 - 检查口 简介：又称为B型铸铁排水管件- 检查口，分为立管检查口，横管检查口，英文名称（check pipe， check hole）带有可开启，拆卸检查盖的配件，装设在排水立管及较长横管段上，作检查和清通之用。包括管件本体、检查口、密封盖、锁紧盖、胶垫，管件本体侧面设有检查口，检查口上装有密封盖，并用胶垫密封，管件本体两端口处装有锁紧盖。
B type cast iron fittings - Check: also called B type cast iron drainage fittings - inspection port, divided into vertical pipe mouth check, check the horizontal pipe mouth, English name (check pipe, check hole) with an open cover, remove the check parts, installed in the vertical drainage pipe and long horizontal pipe section. Check and clear the. The utility model comprises a pipe body, an inspection port, a sealing cover, a lock cover and a rubber pad, wherein the side of the pipe body is provided with an inspection port, and the inspection port is provided with a sealing cover and is sealed with a rubber pad, and a locking cover is arranged at the two port of the pipe body.
The inspection port is a cast iron drain pipe which is often used in the B cast iron pipe. It is necessary to be used in the installation and construction. Check the mouth is generally installed in the vertical pipe, the vertical pipe and horizontal branch pipe for connecting blockage when cleaning, cyclone strengthen single riser drainage, high-rise buildings in the vertical pipe of every layer should be installed a check port spacing is not greater than 10m.
But at the top of the bottom and is provided with a sanitary appliances more than two layers of top building must set up checkpoints, flat roofed building available instead of checking the vent mouth. In addition, if the riser is equipped with a word tube, it shall be provided with an inspection port at the upper part of the tube. An inspection port shall be provided when the drain pipe section exceeds the specified length. Check the setting height, generally from the ground to the entrance to the center 1m is appropriate.
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