What We Galvanize
Emerald specializes in galvanizing smaller parts which are usually difficult and often not economical to galvanize in a large kettle. We also galvanize light to medium weight parts and anchors, and anchor chain. We charge $1.25/Lb for anchors or chain, or a $200 minimum on these types of parts.
Feel free to download the Chain Calculation Excel Sheet at the bottom of this page to figure out how much it may cost for your order, or give us a call.
Most small parts (including all small threaded parts) are run in perforated buckets then centrifuged immediately after hot dipping. The centrifuge spins fast and removes excess zinc. This process keeps sharp edges from forming and keeps bolt threads clean, saving you labor charges. Chain is also put into the centrifuge, to prevent links from sticking together.
Larger fabrications are usually wired or chained up before dipping. Our expert galvanizers use cranes to slowly lift them out of our kettle at an angle so that excess zinc runs off.
Typical types of producst we galvanize include:
The minimum diameter for galvanizing fasteners is 3/8” and the minimum size for galvanizing wood screws is #18. Bolts and chains up to a Rockwell hardness grade of 40 are usually acceptable to galvanize. Call us for our advice on other grades. Parts smaller than 1/2" in diameter cost more per lb than other parts, and need to be evaluated prior to sending us your order. Call us to discuss it.
Calculate your own estimate on chain:
We only galvanize up to 300 ft. at one time (or 450 lbs). Larger or longer chain may need to be cut in half for processing. We can cut your chain for you, and have one of our steel shops re-link it for you with a galvanized link (allow 14 days). It's low cost and does not affect the strength of your chain. The chart below is a picture of a Sample estimate. You can download the excel file free and type in your own chain length. Below the picture is the link to download the file.
How much time does it take to galvanize my anchor or chain? Approximately 2 weeks. It depends on the sandblaster's schedule. Most chain needs to be sandblasted, but some do not. We call you when your order is done. You can pay when you pick up. If you have not received a phone call, that means your order is not done. If it has been more than 3 weeks since you dropped off your order, please call us. Otherwise, we ask that you be patient since our phones are very busy.
Does all chain need sandblasting? Not necessarily. Light surface rust will come off during galvanizing preparation. Only deeply pitted rust, paint, lacquer, and markers need to be fully removed using sandblasting prior to hot dip galvanizing. The best way for us to know is to see your parts in person. You can drop off material Monday - Friday, between 8:00 am and 3:45 pm. Our gates close promptly at 4:00 pm and we are closed on weekends.
How much does sandblasting cost? Sandblasting charges cannot be estimated because the person doing the work does not know before he begins how long it will take. However, it is billed in 15 minute increments at $150.00 per hour. We keep the costs as low as possible for you. The average cost for most chain orders is approximately $200.
For other questions, please call our office at 206-782-8300.