ISO Pipes Tubes Fiitings Standards

Overview

Engineering reference data for ISO Pipes Tubes Fiitings Standards in standard organizations.

Key Formulas

ISO Standard

$ISO \; 9001:2015$

Quality management systems.

ASTM Standard

$ASTM \; E8$

Standard test methods for tension testing.

ANSI Standard

$ANSI/ASME \; B16.5$

Pipe flanges and flanged fittings.

Variables

ISO Thread Standards

Pressure-Tight Thread Standards (ISO 7 Series)

These standards define pipe threads where pressure-tight joints are made on the threads:

Non-Pressure-Tight Thread Standards (ISO 228 Series)

These standards cover pipe threads where pressure-tight joints are not made on the threads:

Plastic Pipe and Fittings Standards

PVC (Polyvinyl Chloride)

• *ISO 264:1976 — Unplasticized PVC fittings with plain sockets for pipes under pressure; Laying lengths; Metric series
• *ISO 265-1:1988 — Fittings for domestic and industrial waste pipes; basic dimensions (metric series, PVC-U)
• *ISO 580:1990 — Injection-molded PVC-U fittings; oven test method and basic specifications
• *ISO 727-1:2002 — PVC-U, PVC-C, or ABS fittings with plain sockets for pressure pipes (Metric series)
• *ISO 727-2:2002 — PVC-U, PVC-C, or ABS fittings with plain sockets for pressure pipes (Inch-based series)
• *ISO 2035:1974 — Moulded fittings for elastic sealing ring type joints; Pressure-resistance test
• *ISO 2044:1974 — Injection-moulded solvent-welded socket fittings; Hydraulic internal pressure test
• *ISO 2048:1990 — Double-socket fittings for PVC-U pressure pipes with elastic sealing ring joints; minimum depths of engagement
• *ISO 3514:1976 — Chlorinated polyvinyl chloride (CPVC) pipes and fittings

PE (Polyethylene)

• *ISO 3458:1976 — Assembled joints between fittings and PE pressure pipes; Leakproofness under internal pressure test
• *ISO 3459:1976 — PE pressure pipes with mechanical fittings; Internal under-pressure test method
• *ISO 3501:1976 — Assembled joints between fittings and PE pressure pipes; Resistance to pull out test
• *ISO 3503:1976 — Leakproofness under internal pressure when subjected to bending

Other Thermoplastics

• *ISO 3477:1981 — Polypropylene (PP) pipes and fittings — density
• *ISO 2507-1:1995 — Vicat softening temperature — General test method
• *ISO 2507-2:1995 — Vicat softening temperature for PVC-U, PVC-C, or PVC-HI
• *ISO 2507-3:1995 — Vicat softening temperature for ABS and ASA

Metal Pipe and Fittings Standards

Specialized Standards

Asbestos-Cement

• *ISO 392:1986 — Pipe fittings for building and sanitary purposes
• *ISO 881:1980 — Pipes, joints, fittings for sewage/drain

Manufacturing Tools

• *ISO 1651:1974 — Tube drawing mandrels
• *ISO 1684:1975 — Wire, bar and tube drawing dies specifications
• *ISO 2284:1987 — Hand taps for parallel and taper pipe threads
• *ISO 2804:1996 — Wire, bar or tube drawing dies — As-sintered hardmetal pellets

Welding and Gas Equipment

• *ISO 3253:1998 — Gas welding equipment — Hose connections for welding, cutting and allied processes

Flow Measurement

• *ISO/TR 3313:1998 — Measurement of fluid flow in closed conduits — Effects of flow pulsations on flow-measurement instruments

Key Thread Designations

$\text{ISO 7} \rightarrow \text{Pressure-tight threads (taper)}$

$\text{ISO 228} \rightarrow \text{Non-pressure-tight threads (parallel)}$

*ISO 7 threads use a taper design (typically 1:16) and seal on the threads themselves, making them suitable for gas and water connections. *ISO 228 threads are parallel and require additional sealing methods (gaskets, O-rings, or sealant) to achieve pressure-tightness.

References

• Original Source