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欧州
- M12 and M16, class 4.6 or 8.8
- Hot-dip galvanized, matching nuts and washers
- Lengths for single, lapped and sleeved purlins
- Packed per building, per bay
- Flange-brace and bridging bolts included
- Matched to C / Z purlin hole patterns
What it is
Purlins and girts are connected to rafter and column cleats with small bolts – usually M12 for light sections and M16 for heavier purlins and laps. Every steel building uses thousands of them, so getting the count, length and finish right saves days on site.
World Steel calculates the bolt list from the 3D model and packs purlin bolts by building and by bay, together with the C and Z purlins.
Typical bolts
| Use | Bolt | Notes |
|---|---|---|
| Purlin / girt to cleat | M12 × 30 – 35, class 4.6 | one or two plies |
| Lapped Z purlins | M12 / M16 × 40 – 45 | three plies at the lap |
| Heavy purlins, eave struts | M16 × 40 – 50, class 8.8 | per design |
| Flange braces, sag rods | M12 × 30 | bracing to purlin flange |
| Bridging | M12 × 30 – 40 | bridging bracket to web |
Finish
Hot-dip galvanized bolts, nuts and washers match the Z275 – Z450 galvanizing of the purlins, so the connection does not become the first point of corrosion.
市場別の規格と要求事項
World Steelが本製品の設計・製作・書類作成に適用する基準――および各市場における主な寸法・荷重要件。
豪州 / NZ
- AS 1111.1Commercial bolts 4.6
- AS 4600Cold-formed steel structures
参考用の概要です――プロジェクト仕様書、採用される基準の版、所轄官庁の判断が優先されます。
表面処理
| 表面処理 | 規格 / 備考 |
|---|---|
| Hot-dip galvanized | ISO 10684 / AS 1214 |
