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45 ° elbow
50-99 Pieces
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100-299 Pieces
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300-9999998 Pieces
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Age Group: adults
Gender: WOMEN
Product Type: Blouses & Tops
Clothing Length: short
Pattern Type: Solid
Collar: O-Neck
Sleeve Length(cm): short
Decoration: none
Supply Type: OEM service
Material: rayon
Fabric Type: Knitted
Top Type: Shirt / Blouse
Technics: YARN DYED
Product Description

Scope of application of 45 ° elbow: when 45 ° elbow is used for direct drinking water pipeline, it must be made of stainless steel or copper according to the requirements of China's drinking water pipeline standards. The inner and outer walls shall be smooth and flat without bubbles, cracks, cracks, peeling, obvious scars and depressions, and the color is basically the same. The cold water pipe and hot water pipe must have eye-catching signs. The end face shall be perpendicular to the axis of the pipe and shall be complete without defect and deformation. The mold closing joint and paint mouth shall be flat without cracking.

Materials of main parts of 45 ° elbow:

45 ° elbow is divided into carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, etc. 45 ° elbows are pipe fittings and pipe connectors. It is used at the branch pipe of the main pipe.

45 ° elbow classification:

1. Divided by material, carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon chrome, PPC, etc.

2. Divided by manufacturing methods, it can be divided into pushing, pressing, forging, casting, etc.

3. According to manufacturing specifications, it can be divided into national standard, electrical standard, water standard, American Standard, German standard, Japanese standard, Russian standard, etc.

4. According to its radius of curvature: it can be divided into long radius elbow and short radius elbow. Long radius elbow refers to the outer diameter of the pipe with its radius of curvature equal to 1.5 times, i.e. r = 1.5D short radius elbow refers to its radius of curvature equal to the outer diameter of the pipe, i.e. r = 1.0dd is the diameter of the elbow and R is the radius of curvature)

5. According to the pressure grade, there are about 17 kinds, which are the same as the pipe specifications in the United States: sch5sch10sch10sch20sch30sch40stdsch40sch60sch80xs; Sch80SCH100Sch120Sch140Sch160XXS; STD and XS are the most commonly used.

Carbon steel 45 degree elbow:

The principle for determining the heating temperature of carbon steel 45 ° elbow is that the material is above the austenitizing temperature, and the main compressive stress on the inner wall of the elbow is less than the yield limit of the material at this temperature. The higher the austenitizing temperature, the higher the heating temperature; The higher the high temperature yield limit of the material, the higher the heating temperature. For medium frequency induction heating, the maximum temperature of WB36 steel is 850 ~ 900 ℃, that of A335P22 steel is 900 ~ 950 ℃, and that of A335P91 material is 900 ~ 1000 ℃. The temperature measurement method is the combination of fixed far-infrared thermometer and manual far-infrared thermometer.

Butt welding elbow is a steel elbow formed by hot pressing or forging. Its connection form is to directly butt weld the elbow with the steel pipe. The main manufacturing standards of butt welding elbow are generally GB / t12459, GB / T13401, asmeb16.9, sh3408, sh3409, Hg / t21635, Hg / t21631, SY / t0510 and GB / t10752-1995.

(1) Butt welding elbow can be divided into long radius butt welding elbow and short radius butt welding elbow according to its radius of curvature. The radius of curvature of long radius butt welding elbow is equal to 1.5 times the outer diameter of the pipe, i.e. r = 1.5D. The radius of curvature of short radius butt welding elbow is equal to the outer diameter of the pipe, i.e. r = 1D. Where D is the diameter of butt welding elbow and R is the radius of curvature.

(2) According to the pressure grade, there are about 17 kinds, which are the same as the American pipe standards, including: sch5s, sch10s, sch10, sch20, sch30, sch40s, STD, sch40, sch60, sch80s and XS; Sch80, sch100, sch120, sch140, sch160 and XXS, among which STD and XS are most commonly used.

(3) According to the angle of elbow, there are 45 degree butt welding elbow, 90 degree butt welding elbow and 180 degree butt welding elbow.

(4) Materials are: carbon steel, alloy steel and stainless steel.


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