螺杆选择指南:材料、镀层、负载额定值和应用。建筑、采矿和工业用螺杆选择的完整参考。
了解螺杆
螺杆(也称为全螺纹或柱螺栓)是一种沿整个长度连续攻丝的紧固件。这种多功能产品在建筑、采矿、制造和维护中有无数应用。
材料和镀层
螺杆材料必须根据强度要求和环境条件选择:碳钢最常见,锌镀层用于室内,热镀锌用于室外和腐蚀环境。不锈钢A2(304)具有良好的耐腐蚀性,A4(316)具有出色的耐氯化物腐蚀性能。
常见应用
螺杆适用于许多建筑和工业应用:结构连接、机械安装、管道支撑、采矿应用以及海洋和沿海应用。
负载额定值和工程
了解螺杆负载能力对于安全应用至关重要。关键是:螺纹啮合需要至少1倍直径(ISO 898),连接设计需要螺母和垫圈分配负载,剪切加载应避免,组合加载需要分析。
常见问题
See frequently asked questions below.
What length threaded rod should I order?
Order slightly longer than needed, then cut to exact length on-site. Standard lengths of 1m, 2m, and 3m cover most requirements. For custom lengths, contact TradeGo for availability.
Can threaded rod be used for underground mining support?
Yes, but use appropriate material for the environment. Hot-dip galvanized or stainless steel for humid underground conditions. Some mining applications require specialized corrosion-resistant coatings.
What's the difference between fine thread and coarse thread?
Coarse thread (standard metric) is easier to assemble and provides better fatigue resistance. Fine thread offers better adjustment precision and higher load capacity in the same diameter.
How do I cut threaded rod on site?
Use a hacksaw with fine-tooth blade, angle grinder with cutting disc, or pipe cutter for smaller diameters. Wear safety glasses and protect threads from debris.
Can I weld threaded rod?
Carbon steel threaded rod can be welded using appropriate procedures. Remove any plating or coating before welding. Stainless rod requires specialized welding techniques.
