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G-Series pipe thread chart (British standard pipe parallel was BSPP & BSPF) and PF-Series pipe thread chart (Japanese pipe parallel).
International Standard ISO 228-1 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 5, Threaded or plain end butt-welding fittings, threads, gauging of threads. This fourth edition cancels and replaces the third edition (ISO 228-1:1994), which has been technically revised.
BSPP G 1/4 : Brith Pipe (BSP) Thread Dimensions and Tolerances. All the relevant data for this tread in one spot.
Length of Screw Thread Engagement per. ISO 965-1 Calculator, Formula and Table Length of engagement of mating threads is selected to utilize full tensile strength of a bolt prior to shearing and nut threads.
• Taper (BSPT): these threads fit in matching parallel or taper ports. Sealing is provided by a pre-coating on the thread. Thread designation • BSP Parallel (BSPP): G followed by the denomination, according to standard ISO 228-1. Example: 1/8 BSP parallel thread = G1/8 • BSP Taper (BSPT):
Standard Material Specifications: The standard materials used in the manufacture of Industrial Pipe and Adapter fittings are shown in Table G2. Note: Upon request, pipe fittings, adapters and plugs could be furnished in materials other than those shown in the material specifications chart.
Thread Pitch Gauge: Used to measure the number of threads per inch, as well as thread to thread spacing in the case of metric connections. Before you begin measuring, be sure the threads are in good condition. Distorted or worn out threads can give you inaccurate measurements.
