High Accuracy Female Cast Iron Union , 1 4 Pipe Unions Couplings Anti Abrasive

Data of 1-1/4" size conical joint union

Different of ASTM , DIN and BS : 

ASTM—American Society for Testing and Materials

ASTMInternational , know until 2001 as the American Socirty for Testing and Materials (ASTM),is an international standard organization that develops and publishes voluntary consensus technical standard for a wide range of materials , products , systems,and services . Some 12575 ASTM voluntary consensus standard operate globally. The organization’s headquarters is in West Conshohocken , Pennsylvania, about 5mi (8.0 km) northwest of Philadelphia .

DIN –Deutsches Institut fur Normung

Deutsches Institut fur Normung e.V. (DIN; in English , the German Institute for Standardization ) is the German national organization for Standardization and is the German ISO member body . DIN is a Registered German Association (e.V.) headquatered in Berlin . There are currently around thirty thousand DIN Standards , covering nearly every field technology .

BS—British Standards

British Standards (BS) are the standards produced by BSI Group which is incorporated under a Charter (and which is formally designated as the Nation Standards Body (NSB) for the UK ). The BSI Group produces British Standards under the authority of the Charter , which lays down as one of the BSI’s objectives.

Size of 1-1/4" size conical joint union