ASME B16.5 合金ブラインド フランジ 1 1, 製品詳細ビュー
30 7月 2026

ASME B16.5 対 ASME B16.47 フランジ

技術ニュースレビュー済み: 3 8月 2026による SASA FLANGE 技術コンテンツチーム

直接の答え

ASME B16.5 covers pipe flanges and flanged fittings from NPS 1/2 NPSを通じて 24. ASME B16.47 covers large-diameter steel flanges from NPS 26 NPSを通じて 60 and includes Series A and Series B dimensional systems. Select by nominal pipe size first, then state the standard, class and, for B16.47, the series. A B16.47 Series A flange does not automatically mate with Series B.

重要なポイント

  • B16.5 and B16.47 are primarily separated by nominal pipe size.
  • B16.47 orders must identify Series A or Series B.
  • 標準, クラス, 直面している, bore and material are all required for compatibility.

Scope and class comparison

特徴 ASME B16.5 ASME B16.47
Nominal size range NPS 1/2 NPSを通じて 24 NPS 26 NPSを通じて 60
Flange class coverage 150, 300, 400, 600, 900, 1500; クラス 2500 in its stated size range 75, 150, 300, 400, 600 そして 900
Dimensional series One standard dimensional system by size, クラスとタイプ Series A and Series B
Core scope Flanges and flanged fittings Large-diameter steel flanges

The current ASME product pages identify B16.5-2025 and B16.47-2025. A project may contractually require another edition, so the purchase order and design documents remain controlling.

What Series A and Series B mean

Series A and Series B provide different dimensional patterns for large-diameter flanges. Differences can include flange outside diameter, 厚さ, ボルトサークル, bolt quantity and bolt size. A flange can have the same NPS and class yet fail to mate because the series is different.

Series A is generally associated with a more robust, heavier pattern, while Series B can be more compact. That broad description should never replace the dimension table. Confirm the mating equipment nozzle, valve or existing flange by drawing, standard edition and measured bolt pattern before ordering a replacement.

Material and ratings are separate decisions

The dimensional standard does not turn “合金鋼” into a complete material specification. 州 ASTM A182 plus the exact grade for forged alloy or stainless flanges, or the other approved material specification. Pressure-temperature ratings depend on the standard’s material grouping and adopted edition.

Facing also remains a separate requirement. RF and RTJ joints use different gasket concepts and machining. ボア, weld end and hub details must suit the connecting pipe. For large custom connections, dimensional verification and an approved drawing are particularly valuable.

Purchase-order wording that prevents mismatch

  • ASME B16.5 または ASME B16.47 and the required edition
  • NPS, クラスとフランジの種類
  • B16.47 Series A or Series B where applicable
  • RF, RTJ or other specified facing and finish
  • 材質仕様, grade and heat-treatment condition
  • ボア, pipe schedule and weld-end detail
  • Bolting, gasket and mating-flange reference when compatibility is critical
  • Dimensional report, 臨死体験, MTC and marking requirements

For brownfield replacements, include a site measurement sheet or approved equipment drawing. Standard shorthand alone may not capture legacy or proprietary connections.

よくある質問

する ASME B16.47 start at NPS 24?

いいえ. ASME B16.5 covers through NPS 24, その間 ASME B16.47 covers NPS 26 NPSを通じて 60.

Can B16.47 Series A mate with Series B?

Do not assume so. Their dimensional patterns differ; verify the exact standard, series, class and mating dimensions.

Does B16.47 cover Class 1500 フランジ?

The standard product scope lists Classes 75, 150, 300, 400, 600 そして 900.

関連フランジガイド

クラス 600 対クラス 900 合金鋼フランジ 高圧用途向けの RF フランジと RTJ フランジ 高温使用用の合金鋼フランジの選択方法

参照される主な規格

規格は発行者のページと照合してチェックされました。 3 8月 2026. 必ずプロジェクトで指定されたエディションを購入して適用してください.

合金鋼フランジの見積もりをリクエストする

材料グレードを送信します, 標準, NPS, 圧力クラス, フランジタイプ, 直面している, パイプスケジュール, 数量と検査要件. 私たちのチームは見積もりの​​前に技術的な説明を確認します.

見積依頼を送信するフランジ製品を見る

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