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　　通風(fēng)管道橫擔(dān)角鋼的規(guī)范主要涉及風(fēng)管的支吊架選用及安裝要求，以下是具體的規(guī)范內(nèi)容：

　　The specifications for cross arm angle steel of ventilation ducts mainly involve the selection and installation requirements of support and hanger brackets for air ducts. The following are the specific specifications:

　　一、橫擔(dān)角鋼選用

　　1、 Selection of cross arm angle steel

　　水平安裝風(fēng)管的橫擔(dān)，可選用相應(yīng)規(guī)格的角鋼等型材。角鋼的規(guī)格應(yīng)根據(jù)風(fēng)管的長(zhǎng)邊尺寸來(lái)確定。例如：

　　Horizontal installation of air ducts can use corresponding specifications of angle steel and other profiles. The specifications of angle steel should be determined based on the length of the air duct. For example:

　　當(dāng)風(fēng)管長(zhǎng)邊尺寸小于或等于630mm時(shí)，可選用較小規(guī)格的角鋼，如L25×3。

　　When the length of the air duct is less than or equal to 630mm, smaller specifications of angle steel, such as L25 × 3, can be used.

　　當(dāng)風(fēng)管長(zhǎng)邊尺寸在630mm至1250mm之間時(shí)，可選用L30×3或更大規(guī)格的角鋼。

　　When the length of the air duct is between 630mm and 1250mm, L30 × 3 or larger angle steel can be used.

　　當(dāng)風(fēng)管長(zhǎng)邊尺寸大于1250mm時(shí)，應(yīng)選用更大規(guī)格的角鋼，如L40×4或L50×5，以確保支吊架的承載能力。

　　When the length of the air duct is greater than 1250mm, larger specifications of angle steel, such as L40 × 4 or L50 × 5, should be used to ensure the bearing capacity of the support and hanger.

　　二、橫擔(dān)角鋼安裝要求

　　2、 Installation requirements for cross arm angle steel

　　支吊架間距：支吊架的間距應(yīng)根據(jù)風(fēng)管的規(guī)格和安裝要求來(lái)確定。一般來(lái)說(shuō)，對(duì)于不同規(guī)格的風(fēng)管，支吊架的間距有所不同。例如，對(duì)于長(zhǎng)邊尺寸小于或等于2000mm的風(fēng)管，支吊架的間距可以適當(dāng)放大，但不應(yīng)超過(guò)規(guī)定的最大值。具體間距可參考相關(guān)規(guī)范或設(shè)計(jì)要求。

　　Spacing between supports and hangers: The spacing between supports and hangers should be determined according to the specifications and installation requirements of the air duct. Generally speaking, the spacing between supports and hangers varies for different specifications of air ducts. For example, for ducts with a long side size of less than or equal to 2000mm, the spacing between supports and hangers can be appropriately increased, but should not exceed the specified maximum value. The specific spacing can refer to relevant specifications or design requirements.

　　支吊架加強(qiáng)：在彎管、三通、四通等連接處，以及風(fēng)閥等部件與風(fēng)管連接處，應(yīng)適當(dāng)加強(qiáng)支吊架，以確保風(fēng)管的穩(wěn)定性和安全性。

　　Strengthening of supports and hangers: At connections such as bends, tees, and tees, as well as at connections between components such as air valves and air ducts, supports and hangers should be appropriately strengthened to ensure the stability and safety of the air ducts.

　　支吊架設(shè)置：支吊架應(yīng)設(shè)置在風(fēng)管的重心處，并確保其牢固可靠。同時(shí)，支吊架與風(fēng)管之間應(yīng)墊上適當(dāng)厚度的墊片，以防止風(fēng)管在振動(dòng)或溫度變化時(shí)受損。

　　Support and hanger installation: The support and hanger should be installed at the center of gravity of the air duct and ensured to be firm and reliable. At the same time, a gasket of appropriate thickness should be placed between the support hanger and the air duct to prevent damage to the air duct during vibration or temperature changes.

　　風(fēng)管固定：風(fēng)管在安裝過(guò)程中應(yīng)保持水平或垂直，避免出現(xiàn)歪斜或扭曲現(xiàn)象。對(duì)于水平懸吊的主、干風(fēng)管長(zhǎng)度超過(guò)20m時(shí)，應(yīng)設(shè)置防止擺動(dòng)的固定點(diǎn)，以確保風(fēng)管的穩(wěn)定性。

　　Duct fixation: Ducts should be kept horizontal or vertical during installation to avoid tilting or twisting. When the length of the main and main air ducts suspended horizontally exceeds 20m, fixed points to prevent swinging should be set up to ensure the stability of the air ducts.

　　三、其他注意事項(xiàng)

　　3、 Other precautions

　　防腐處理：對(duì)于金屬支吊架和角鋼等附件，在潮濕或腐蝕性環(huán)境中應(yīng)進(jìn)行防腐處理，以延長(zhǎng)其使用壽命。

　　Anti corrosion treatment: For metal supports, hangers, angle steel and other accessories, anti-corrosion treatment should be carried out in humid or corrosive environments to extend their service life.

　　安全檢查：在安裝完成后，應(yīng)對(duì)支吊架和風(fēng)管進(jìn)行全面檢查，確保其符合設(shè)計(jì)要求和安全規(guī)范。對(duì)于發(fā)現(xiàn)的問(wèn)題應(yīng)及時(shí)進(jìn)行處理和整改。

　　Safety inspection: After installation, a comprehensive inspection should be conducted on the supports, hangers, and air ducts to ensure that they meet the design requirements and safety regulations. Any problems discovered should be promptly addressed and rectified.

　　綜上所述，通風(fēng)管道橫擔(dān)角鋼的規(guī)范涉及多個(gè)方面，包括角鋼的選用、安裝要求以及其他注意事項(xiàng)等。在實(shí)際應(yīng)用中，應(yīng)嚴(yán)格按照相關(guān)規(guī)范和要求進(jìn)行操作，以確保風(fēng)管系統(tǒng)的穩(wěn)定性和安全性。

　　In summary, the specifications for the cross arm angle steel of ventilation ducts involve multiple aspects, including the selection and installation requirements of angle steel, as well as other precautions. In practical applications, operations should be strictly carried out in accordance with relevant specifications and requirements to ensure the stability and safety of the air duct system.

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