Amco Metal [Stainless Steel] manufactures 90 Degree Elbows. The 90 Degree Elbows are socket weld pipe fittings that are made as SR [Short Radius] elbows and LR [Long Radius] elbows. These fittings have Center-to-Face dimension and are typically used in tight areas where clearances are an issue
Amco Metal [Stainless Steel] is the supplier & exporter of stainless steel forged fittings for pipe & tubes. The 90 Degree Elbows are mostly used for changing the direction in piping and is also sometimes called a "quarter bend".