T/CNHA 1004-2017 Active Group standards

T/CNHA 1004-2017 Fire-resistant and gas-sealing threaded ductile iron fittings for use in gas pipes

Publish Date: 2018-07-12 Implement Date: 2018-12-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CNHA 1004-2017

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Mechanical

ICS Name: Iron and steel castings

Publish Date: 2018-07-12

Implement Date: 2018-12-12

Scope

Scope: This standard specifies the type and size, materials, rust-proof treatment, pipe thread processing quality, pressure resistance, marking, and inspection methods for threaded ductile iron fittings used in fire protection and gas applications. This standard applies to threaded ductile iron fittings used in fire protection, gas systems, and general pipelines for water, oil, air, and steam, including the elbows,45° elbows, reducer elbows, internal and external thread elbows, tees, reducer tees, cross tees, reducer cross tees, external fittings, reducer external fittings, pipe caps, and plugs specified in the standard. This standard applies to nominal sizes (DN) of 15 to 150, which are designed to connect with threads specified and compliant with GB/T 7306.1, GB/T 7306.2, GB/T 12716, and GB/T 27944. For fittings outside the aforementioned scope, types, specifications, and applications within GB/T 3287 can refer to clauses 4 to 9 of this standard. Main technical content: This standard specifies the type and size, materials, rust-proof treatment, pipe thread processing quality, pressure resistance, marking, and inspection methods for threaded ductile iron fittings used in fire protection and gas applications.