The inner and outer surfaces of the elbow should be smooth, without detrimental strength and appearance defects, such as scars, scratches, heavy leather, etc., after the defects are found, they should be ground and the thickness of the ground should not be less than 93.5% of the original wall thickness. The ground should be smooth and the defects should be cleared with colorant or magnetic particle inspection.

The inner and outer surfaces of the elbow should be smooth and free of damage to strength and appearance defects, such as scars, scratches, heavy leather, etc., after defects are found, they should be ground and the thickness of the ground should not be less than 93.5% of the original wall thickness. The ground should be smooth and the defects should be cleared with colorant or magnetic particle inspection.

The three-way pipe, as the name suggests, is a pipe joint with three ports. Mainly used for liquid or gas transportation

The three-way pipe, as the name suggests, is a pipe joint with three ports. Mainly used for liquid or gas transportation

The metal corrugated compensator is a kind of compensator. The metal corrugated compensator is made of austenitic stainless steel or materials according to user requirements. It has excellent flexibility, corrosion resistance and high temperature resistance (-235℃ ~ +450℃ ), high pressure resistance (up to 32MPa), can be connected in any direction in the pipeline to compensate for temperature and absorb vibration, reduce noise, change the direction of medium transport, eliminate mechanical displacement between pipelines or between pipelines and equipment, etc. The double flange metal corrugated hose is especially suitable for flexible joints of various pumps and valves with displacement and vibration.

Supports and hangers are mainly used in power plant steam and water pipelines or boiler equipment, thermal displacement and equipment during operation. The work and thermal displacement requirements of the spring support and hanger are calculated and determined according to the pipe stress.

Manhole refers to the opening structure used for personnel to enter and exit equipment for installation, maintenance and safety inspection. It is mainly composed of short tube section (or short tube), flange and manhole cover with handle. For safety inspection considerations, the number of manholes required to be opened for pressure vessels and their minimum dimensions are shown in "Inspection Holes". The manhole materials are carbon steel and stainless steel. Manholes are divided into normal pressure and pressure manholes according to pressure conditions; manholes are divided into circular, elliptical and rectangular manholes according to their shape. Rectangular manholes are only suitable for atmospheric equipment; manholes are divided into horizontal according to the installation position Manholes are installed vertically; the fixing methods of manhole covers include rotating cover and hanging cover; the speed after opening of the manhole has ordinary and quick opening. The structure and size of manholes are generally standardized. Please refer to the relevant manual for selection or design.

Expansion joints refer to pipeline compensation joints, which are new products for connecting pumps, valves, pipelines and other equipment to the pipeline. They are connected by bolts to make them into a whole with a certain displacement. They are divided into AY type gland type Expansion joint, AF type flange loose sleeve expansion joint, BF type single flange limit expansion joint, B2F type double flange limit expansion joint, BY type gland loose sleeve limit expansion joint, CF single flange transmission force Joints, C2F double flange power transmission joints, etc.

Rubber soft joints are commonly known as flexible rubber joints. Rubber joints are rubber products used for flexible connection between metal pipes. The materials are natural rubber, butyl rubber, styrene butadiene rubber, etc.

The sleeve compensator is called a tube expansion joint. It is a compensation device for hot fluid pipelines. It is mainly used to absorb and compensate the axial thermal expansion displacement that occurs after the auxiliary installation of the linear pipeline. It is a kind of direct installation in any non-corrosive one-way or multiple Compensator in the pipeline to the fluid. Sleeve-type compensator. It is widely used in transportation pipelines in urban heating, metallurgy, mining, power generation, petrochemical, construction and other industries. It is mainly composed of sleeve (core tube), shell, sealing material, etc.

The nature of the metal hose, on the corrugated pipe, first, it has the characteristics of strong corrosion resistance, because the corrugated pipe, stainless steel, the data itself has strong corrosion resistance; secondly, the strength is high, because it is corrugated. It has great strength and is convenient to use.

Flange is a part that connects between shaft and shaft, used for connection between pipe ends