Stamping 45 ° elbow
Stamped 45 ° elbow is a type of pipeline connector formed through stamping technology, widely used in industrial pipeline systems to achieve 45 ° directional deflection. It has the advantages of high dimensional accuracy, low flow resistance, and good strength.
1、 Product Features
High forming accuracy: using cold/hot stamping technology, the pipe size is stable, the ellipticity is ≤ 1%, and the wall thickness error is within ± 0.3mm.
High connection strength: suitable for welding, flange or socket connections, with strong pull-out resistance and can withstand high pressure and vibration loads in the system.
Low fluid resistance: The 45 ° angle design balances steering efficiency and compact space, especially suitable for slow turning scenarios in medium and low-pressure pipelines.
Material diversity and adaptability support customization of various materials, including carbon steel (Q235, 20 #), alloy steel, austenitic stainless steel, duplex steel, titanium alloy, Hastelloy, Monel, Inconel, and special metal customization.
Stainless steel stamped fittings have excellent corrosion resistance and are widely used in industries such as chemical, food, and pharmaceutical; Carbon steel pipe fittings are economical and practical, making them an ideal choice for municipal engineering and ordinary industrial pipelines; Alloy steel pipe fittings can meet the requirements of special working conditions such as high temperature and high pressure.
2、 Execution standards
national standard:
GB/T 12459-2017 "Steel butt welded seamless fittings"
GB/T 19228-2016 "Stainless Steel Compression Fitting" (applicable to double compression structure)
Industry standards:
HG/T 2132-2021 "Glass lined 45 ° Bend"
International standards:
ASME B16.9 (American standard butt welded pipe fittings)
ISO 3419, DIN 2605 (German standard)
3、 Size specifications
公称通径 DN | 常见外径（mm） | 弯曲半径（LR=1.5D） | 角度公差 |
DN15 | 21.3 / 18 | 22.5 mm | ±0.5° |
DN25 | 33.7 / 32 | 38 mm | ±0.5° |
DN50 | 60.3 / 57 | 76 mm | ±0.5° |
DN100 | 114.3 / 108 | 152 mm | ±0.5° |
DN150 | 168.3 / 159 | 229 mm | ±0.5° |
注：A系列为美标外径（ASME），B系列为国标/欧标外径；弯曲半径分长半径（LR=1.5D） 和短半径（SR=1.0D），LR更利于减小流阻。
四、压力等级
公称压力范围：PN1.0MPa ~ PN420MPa（Sch5s ~ XXS）
常见等级对应：
Sch40：适用于PN1.6~2.5MPa（常规工业管道）
Sch80/XS：适用于PN4.0~10.0MPa（高压蒸汽、石油管线）
XXS：适用于PN10.0MPa以上或极端腐蚀环境
爆破压力：≥8.0MPa（双卡压式结构）
工作温度范围：
碳钢：-20℃ ~ +232℃
不锈钢：-40℃ ~ +150℃
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