ASME B16.5 Alaşımlı Çelik Flanş Boyutları

Teknik kılavuzİncelendi: 30 Temmuz 2026Tarafından hazırlandı SASA FLANGE Teknik İçerik Ekibi

Doğrudan cevap

ASME B16.5 defines pressure-temperature ratings, boyutlar, toleranslar, malzemeler, marking and testing for pipe flanges and flanged fittings from NPS 1/2 NPS aracılığıyla 24. It includes Classes 150, 300, 400, 600, 900 Ve 1500 across applicable sizes, with Class 2500 limited to NPS 1/2 NPS aracılığıyla 12.

Temel çıkarımlar

Material specification and dimensional standard must both appear on the order.
The bore of a weld neck flange must be specified to match the pipe wall.
Do not scale dimensions from a drawing or substitute B16.47 dimensions for B16.5.

Dimensions controlled by ASME B16.5

Depending on flange type, the standard controls outside diameter, kalınlık, göbek boyutları, bolt-circle diameter, bolt-hole quantity and size, facing geometry and other details. Weld neck flanges additionally require attention to bore and weld-end configuration.

Tolerances matter. A nominal dimension from a catalogue is not a manufacturing inspection plan; use the standard and project drawing for acceptance.

Size and class scope

Item	ASME B16.5 scope summary
Nominal boyut	NPS'ler 1/2 NPS aracılığıyla 24
Classes	150, 300, 400, 600, 900 Ve 1500 within applicable size ranges
Sınıf 2500	NPS'ler 1/2 NPS aracılığıyla 12
Malzemeler	Cast or forged flanges; specified blind/reducing configurations may use permitted plate material
Joint details	Includes requirements and recommendations for bolting, gaskets and flange joints

Material and dimensions are separate decisions

“ASTM A182 F22” defines a material grade; “ASME B16.5 Sınıf 600 WNRF” defines a dimensional and rating configuration. Neither statement alone creates a complete flange specification.

Add NPS, karşı karşıya, pipe schedule/bore, yüzey kalitesi, standard edition and inspection documents. For RTJ flanges, include the correct ring groove designation.

Dimensional inspection before shipment

A useful report records critical dimensions against specified nominal values and tolerances. Inspection typically covers OD, kalınlık, merkez, delik, cıvata dairesi, holes, facing and overall height. Calibrated equipment and drawing revision should be identified.

For replacement flanges, the buyer should provide an approved field measurement or equipment drawing. Corroded samples can conceal the original facing height or edge profile, so reverse engineering from a worn component requires engineering judgement and should not be treated as a standard catalogue order.

Protect sealing faces and weld ends after final inspection so packing and transport do not invalidate the accepted condition.

Sık sorulan sorular

Yapmak ASME B16.5 cover NPS 30 flanşlar?

HAYIR. ASME B16.47 addresses large-diameter steel flanges from NPS 26 NPS aracılığıyla 60.

Is the bore fixed by pressure class?

Not by class alone. Weld neck bore selection must account for the specified pipe outside diameter and wall thickness.

Are Class 300 ve Sınıf 600 bolt patterns interchangeable?

Öyle varsaymayın. Use the exact dimensional table for the size, class and facing.

Referans verilen birincil standartlar

ASME B16.5-2025 — Boru Flanşları ve Flanşlı Bağlantı Parçaları, NPS'ler 1/2 NPS aracılığıyla 24

Her zaman satın alma siparişinde belirtilen basımı doğrulayın ve tasarım ve kabul için tam kontrollü standardı edinin..

Alaşımlı çelik flanş teklifi isteyin

Malzeme notunu gönder, standart, NPS'ler, basınç sınıfı, flanş tipi, karşı karşıya, boru programı, miktar ve muayene gereksinimleri. SASA FLANGE Teklif vermeden önce teknik açıklamayı inceleyeceğiz.

Teklif talebinizi gönderin Flanş ürünlerini görüntüle