|
HS Code |
881550 |
| Product Name | Lead Lumps |
| Chemical Formula | Pb |
| Purity | 99% minimum |
| Appearance | Dull gray, irregular solid pieces |
| Density | 11.34 g/cm3 |
| Melting Point | 327.5°C |
| Boiling Point | 1749°C |
| Molecular Weight | 207.2 g/mol |
| Solubility In Water | Insoluble |
| Common Uses | Radiation shielding, ballast, plumbing, batteries |
| Toxicity | Toxic if ingested or inhaled |
| Storage Condition | Store in cool, dry place |
| Cas Number | 7439-92-1 |
As an accredited Lead Lumps factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A sturdy, sealed container holds 500 grams of Lead Lumps, labeled with hazard warnings, manufacturer details, and safety instructions. |
| Shipping | Lead Lumps should be shipped in strong, sealed containers to prevent leaks and contamination. Label all packages clearly as hazardous material, complying with relevant transportation regulations for toxic substances. Store away from incompatible materials, moisture, and food items. Ensure handlers use appropriate personal protective equipment during transport and handling. |
| Storage | Lead lumps should be stored in a cool, dry, well-ventilated area, away from heat sources, acids, and incompatible materials. Containers must be tightly sealed, clearly labeled, and constructed from materials resistant to lead corrosion. Avoid contact with food, water, or combustible substances. Store away from children and unauthorized personnel, and adhere to all local environmental and safety regulations. |
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Purity 99.9%: Lead Lumps with 99.9% purity are used in nuclear shielding applications, where high radiological attenuation protects sensitive devices from ionizing radiation. Melting Point 327°C: Lead Lumps with a melting point of 327°C are used in ballast casting for marine vessels, where consistent fusion ensures optimal weight distribution and stability. Specific Gravity 11.34: Lead Lumps with a specific gravity of 11.34 are used in counterweights for industrial machinery, where high density provides reliable balance and vibration reduction. Particle Size 25mm: Lead Lumps with a particle size of 25mm are used in ammunition manufacturing, where uniform dimensions allow precise projectile formation and consistent ballistics. Stability Temperature 150°C: Lead Lumps with a stability temperature of 150°C are used in electrical cable sheathing, where thermal resilience maintains insulation integrity during operation. |
Competitive Lead Lumps prices that fit your budget—flexible terms and customized quotes for every order.
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Lead means business when it comes to weight and density. It’s not a showy metal, but it gets the job done where others fall short. Lead Lumps show this at its most practical. These chunks of solid lead answer a need that pops up everywhere — precise mass where stability or balance is non-negotiable. Many talk about high-tech composites or lightweight materials, but try balancing a ship’s ballast on hope. In the sea, on construction grounds, inside a laboratory, or beneath the surface at a fishing dock, there’s a reason folks reach for Lead Lumps.
Lead Lumps aren’t a fancy idea. The concept is simple: dense, hefty pieces of lead cut or cast into sizes and shapes that suit real daily work. I’ve handled these lumps in fishing, and they land with assurance — not just in the water, but in the hand. Several fishermen I know would rather lose their lunch than swap a lead lump for an inferior alternative. A standard lead lump usually weighs between 250g to over 25kg, thick enough to withstand handling yet shaped smartly for reliable stacking, fastening, or wedging. The surface can be rough from casting or smoothed by design, but what matters is the substance inside.
Folks have tried lighter metals or synthetic fillers and usually circle back to lead. Steel rusts — and it weighs less, so the bulk creeps up faster than expected. Concrete blocks break and don’t carry their weight for long, especially in harsh, wet, or shifting environments. On the other hand, lead takes a beating, resists most corrosion, and keeps things where they’re supposed to be. Price counts, so does ease of recycling. What sets Lead Lumps apart is that they supply steadfast, measurable weight, can be reshaped if needed, and don’t shock the wallet compared to exotic alloys.
You’ll find these lumps deployed where guesswork ends. Divers slip them onto belts to sink with control. Scientific labs use them to counterbalance sensitive equipment. Old-timers fix basement pipes with lead lumps to hold plumbing steady. Roofers secure scaffolds on windy days not with sandbags, but with the reliable density of lead. In my experience, I’ve seen tractor collectors rely on original-style lead ballasts to preserve balance in restored machines. The resistance to moisture and rough handling makes for a long, hard life — one lump can serve generation after generation, holding stories as well as weight.
Lead’s main downside comes from its reputation, built on real risks for those who ignore basic safety. During childhood, I spent summers watching grandparents melt old lead for fishing weights, back before everyone carried protective gloves. Now, we know better — no heating it up bare-handed, no touching food until hands are scrubbed. Used sensibly, with gloves and a little respect for toxins, lead holds its place in the toolkit. The same properties that make it valuable — density, malleability, and surface resistance — also make it important to recycle and store properly. Lead doesn’t stick to your hands like oil, but it shouldn’t follow you into the kitchen or lunchbox either. Whenever possible, working around children or animals gets a hard “no.”
Manufacturers usually offer Lead Lumps in several weight classes — small hockey puck-sized discs, palm-sized bricks, and larger blocks that take two arms to move. Selecting the right size depends on the job. Installing counterweights in a small elevator call for miniature bricks, stackable and easy to anchor. Harbor crews loading the ballast for a shipping container grab larger blocks for fewer trips up and down the gangplank. I’ve found that some designs offer iron handles or bored-out holes for anchoring, signs of a company thinking about real users, not just charts and specs. The model matters less than the integrity of the casting. Soft edging can help prevent nicks during handling. Details like casting marks don’t just tell you who made it but can hint at purity and recycling history as well.
Nothing matches pure lead for mass in a small package. Most lumps are cast in molds, sometimes recycled from other applications — scrapped car batteries, spent ammunition, or old plumbing. Regulations clamp down on imported wastes now, so today’s lumps often trace their source to licensed recycling streams or domestic smelting. Smelting, casting, and cooling happen under strict workplace guidelines. This protects not just the workers but the end user, too. You pick up a Lead Lump at the supply yard and know its life story isn’t hidden by secrecy or shortcuts, at least if you deal with credible suppliers. Real-world evidence bears this out: lumps from fly-by-night sources end up flaking or cracking, losing their reliability or, worse, leaching contaminants.
Some critics will tell you there’s no longer a place for lead. The headlines about lead in water, lead in toys, and historical lead paint are real — nobody wants to repeat those mistakes. What deserves a fair shake is responsible handling and end-of-life planning. Waste streams must never spill into water, and lumps past their prime ought to find their way back to smelters for another go-round. A single lead lump can stay useful for decades in settings like maritime ballast or structural counterweights, long after plastics or resins have cracked, lost weight, or been swept into the waste stream. It doesn’t just vanish or turn into micro-particles. From my experience, most tradespeople understand this, treating lead with a measured respect born from knowing the risks and appreciating the rewards.
Alternatives appear every few years, promising “greener” ballast or “modern” substitutes. Tungsten packs a heavier punch by volume but costs outstrip lead by an order of magnitude, making them a nonstarter outside of specialty fields like aerospace. Iron and steel do the job in favorably dry conditions, but rust and bulk almost always show up as headaches. Synthetics, high-density polymers, and modular sandbags give flexibility, but fall short on raw weight, and, in my experience, don’t handle real work stress for long. They break, shift, or need replacement far sooner. Lead delivers simple, measurable heft, ready to get hammered, melted down, or just passed on, over and over.
Tradespeople and industry veterans rarely waste words on what works. Rigging crews, construction bosses, and marine engineers stick with Lead Lumps because they can inspect, clean, and repurpose them easily. At the end of a project, the value doesn’t just stop — that material heads back to the yard, not the landfill. A friend involved in live theater insists on lead blocks for counterweight rigging over stages, describing how even a moment’s slip with lighter material can spoil a performance or cause danger overhead. They value the certainty — a lump stays put, never swelling, rotting, or breaking free.
Trust starts in clarity — real lead means a real guarantee of density, not a mix of random metals cast together. Look for markings or certifications that show a lump’s origin. Don’t be fooled by deals that seem too good to be true; recycled lead without proper controls can have unwanted metals. I’ve come across weights that cracked or chipped early, only to learn someone had mixed in scrap without oversight. If it comes from a reputable foundry, with a proven recycling or mining record, the lead lump earns trust not just by tradition but by compliance. This also shields users from snagging product tainted with banned substances.
Factories and trade schools teach a new respect for lead, focusing on gloves, masks, and clear rules for containment. Lead accumulates in the body, so it’s not a topic for shortcuts. The best protection is regular hand washing and keeping the work area separate from living space. The risks aren’t something to brush aside, but they don’t make lead untouchable — they call for training and clear boundaries. I’ve seen family businesses hand down these safety habits like recipes, mixing know-how with simple reminders like “never take work tools into the house.” In settings like hospitals, lead’s shielding abilities protect workers and patients from radiation, highlighting that safety depends on sensible limits, not just elimination.
Younger tradespeople approach old ideas with new eyes. Some ask if using lead remains sensible as environmental regulations tighten. The answer lands somewhere between risk and reward. Smart recycling, clean supply lines, and modern casting techniques can keep lead part of the future’s material mix without repeating past blunders. Lead lumps aren’t about nostalgia — they answer a straightforward need. For every new lightweight composite, there’s work better handled by reliable, old-fashioned heft. Whether for bicycle wheel weights, elevator counterweights, or sonar sinkers, the mass of lead stays relevant.
Sensible lead handling comes down to three ideas: use, secure, recycle. That means wearing gloves, keeping lumps away from food or drink, and sending worn-out or surplus pieces to recycling centers instead of tossing them out. In my experience, this cuts risk to negligible, especially in professional settings. Adding barcoded tracking, better container labeling, or on-site training can close gaps still left in the process. If buyers insist on full chain-of-custody paperwork for lead purchases, the most disreputable sellers vanish fast, protecting tradespeople and consumers alike.
Lead Lumps blend practical problem-solving with responsibility. They aren’t a trophy material or a trend. Instead, they represent centuries of getting things done where raw weight decides whether a job is safe or not. Every field has its unsung heroes — lead remains that steady background player. From a block that keeps a crane stable to the small lump that steadies a scientific instrument deep below ground, its value is the quiet kind — less noticed, always essential.
Nobody should ignore the environmental footprint left by careless use. Yet, discarding lead lumps altogether just shifts the problem elsewhere — swapping solid, known risks for unknown ones. Why not push for smarter life cycles? Lead can be traced, recast, reformed, and re-entered into productive use. In the years ahead, the best suppliers will offer full transparency, modern testing, and collection points for used or damaged lumps. Their customers, in turn, will treat this material with the respect it deserves, neither villainizing nor romanticizing it, but simply recognizing the honest weight it brings to real-world problems. Experiences across generations show: with respect and common sense, Lead Lumps do not stand in the way of progress — they anchor it.
Lead Lumps may lack glamour, but nothing in my experience has matched them for their simple, reliable service. The world may move fast, but sometimes, it’s the slow heaviness of lead that lets progress stand firm. Whether you use them to ground a sailboat, balance a wind turbine blade, or keep delicate lab gear steady, these lumps carry a tradition worth preserving.