You're working in an environment where one spark could turn a routine valve adjustment into a fireball — methane, hydrogen, ethylene, all it takes is a moment, and standard steel tools just can't be risked. That's the problem, and we’ve seen it in petrochemical plants where crews have to stop mid-shift to swap out gear.

What our company supply are anti-explosion tools made from copper alloys — aluminum bronze or beryllium copper — so they physically can't generate sparks even with heavy impact. Teh aluminum bronze ones are silver-yellow and micro-magnetic, handling ethylene levels below 7.8% without issue, while beryllium copper is golden, non-magnetic, and hydrogen-rich areas up to 21% concentration. Basically, you pick base on your gas profile.

Hardness ranges from 20 to 40 HRC depending on the alloy, with tensile strength anywhere from 782 to 1326 N/mm² — so it's tough but not brittle, especially under repeated use. Elasticity limit sits between 450 and 880 N/mm², and extensibility varies: δ≥5% for aluminum bronze versus δ≤1.0% for beryllium copper (that one's stiffer, less forgiving in a bend). We follow GB/T 10686-2013 at ExIIC level, with drop weight and friction tests (usually 2-4 weeks lead time).

Avaliable sizes go from 14mm up to 50mm — 17, 19, 22, 24, 27, 30, 32, 36, 41, 46 — so you'll cover most standdard fasteners in a plant. Not suited for underwater welding or direct acid contact, just so you know. We usually have stock, but confirm lead time on the larger sizes.

One thing a buyer might not think of: the beryllium copper tools are actually slightly harder to machine so they hold their shape longer under torque, but they're also more expensive and the extensibility delta ≤1% means they snap rather than deform under extreme load — fine for gas environments, less fine if you're prying things open.
Our standard MOQ is 50 pieces per size, but we can adjust down to 20 pieces for first-time orders or sample requests. Just drop us a line with your needs.
Yes, every batch ships with a test report certifying compliance with GB/T 10686-2013 and ExIIC level. We can also arrange third-party inspection if your company requires it.
For 500 pieces, lead time is around 15-20 working days from order confirmation. If you need a rush, we can prioritize for a small surcharge and deliver in 10 days.
We only produce the listed sizes: 14mm to 50mm as specified. Custom sizes would require a new mold, which means a higher MOQ and longer lead time. Stick to our standard sizes for faster delivery.
Keep them in a dry, clean environment away from corrosive chemicals. We recommend storing them in the original packaging or a tool chest with anti-rust lining. Avoid mixing with ferrous tools to prevent spark risks.