{"id":599,"date":"2025-08-13T01:30:07","date_gmt":"2025-08-13T01:30:07","guid":{"rendered":"https:\/\/zhihongplastic.com\/?p=599"},"modified":"2026-06-21T15:02:05","modified_gmt":"2026-06-21T15:02:05","slug":"hdpe%e3%82%b7%e3%83%bc%e3%83%88-4x8-3-6-10-12-mm-%e8%a8%b1%e5%ae%b9%e8%aa%a4%e5%b7%ae-%e9%87%8d%e9%87%8f-%e4%be%a1%e6%a0%bc%e8%a6%81%e5%9b%a0","status":"publish","type":"post","link":"https:\/\/zhihongplastic.com\/ja\/hdpe%e3%82%b7%e3%83%bc%e3%83%88-4x8-3-6-10-12-mm-%e8%a8%b1%e5%ae%b9%e8%aa%a4%e5%b7%ae-%e9%87%8d%e9%87%8f-%e4%be%a1%e6%a0%bc%e8%a6%81%e5%9b%a0\/","title":{"rendered":"HDPE\u30b7\u30fc\u30c8 4\u00d78 (3\/6\/10\/12 mm)\uff1a\u516c\u5dee\u3001\u91cd\u91cf\u304a\u3088\u3073\u4fa1\u683c\u306e\u8981\u56e0"},"content":{"rendered":"

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HDPE Sheet 4\u00d78 (3\/6\/10\/12\u00a0mm): Tolerance, Weight & Price Factors<\/h1>\n

At Zhihong Plastic<\/strong>, we manufacture 4\u00d78 ft HDPE sheets (\u22481220\u00d72440\u00a0mm) for signage, fabrication, tanks, liners and OEM parts. Below is a clear, engineering-first guide you can use for RFQs and purchasing. We include our factory reference tolerances, real weight calculations, and the pricing variables we actually use in quoting.<\/p>\n

Standard Specs \u2014 What We Supply<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nOur Standard<\/th>\nNotes<\/th>\n<\/tr>\n<\/thead>\n
Base Size<\/td>\n4\u00d78 ft (\u22481220\u00d72440\u00a0mm)<\/td>\nCut-to-size available<\/td>\n<\/tr>\n
Thickness Options<\/td>\n3 \/ 6 \/ 10 \/ 12\u00a0mm (others on request)<\/td>\nTypical range 1\u201340\u00a0mm<\/td>\n<\/tr>\n
Density<\/td>\n~0.95\u00a0g\/cm\u00b3<\/td>\nEngineering-grade HDPE<\/td>\n<\/tr>\n
Thickness Tolerance<\/td>\n\u00b10.2\u20130.5\u00a0mm<\/td>\nDepends on gauge; confirm in PO<\/td>\n<\/tr>\n
Flatness<\/td>\n<2\u00a0mm\/m (typ.)<\/td>\nMeasured on granite table<\/td>\n<\/tr>\n
Surface<\/td>\nMatte \/ Orange-peel<\/td>\nProtective film optional<\/td>\n<\/tr>\n
UV Stabilization<\/td>\nOutdoor grade optional<\/td>\nFor signage\/playgrounds<\/td>\n<\/tr>\n
Colors<\/td>\nBlack \/ Natural \/ Custom colors<\/td>\nPantone match with MOQ<\/td>\n<\/tr>\n
MOQ<\/td>\n30\u201350 sheets \/ color<\/td>\nMixed colors allowed<\/td>\n<\/tr>\n
Lead Time<\/td>\n7\u201315 days<\/td>\nBy color and volume<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Weight per Sheet (4\u00d78 ft)<\/h2>\n

Our formula:<\/em> Weight(kg) = Area(m\u00b2) \u00d7 Thickness(mm) \u00d7 Density(kg\/m\u00b3) \u00f7 1000<\/code>
For 4\u00d78 ft, Area = 1.22 \u00d7 2.44 = 2.9768\u00a0m\u00b2<\/strong>; Density(HDPE) \u2248 950\u00a0kg\/m\u00b3<\/strong> \u2192 Weight \u2248 2.9768 \u00d7 Thickness(mm) \u00d7 0.95<\/strong>.<\/p>\n\n\n\n\n\n\n\n\n
Thickness<\/th>\nNominal Weight \/ Sheet<\/th>\nWeight Window (\u00b10.5\u00a0mm tol.)<\/th>\n<\/tr>\n<\/thead>\n
3\u00a0mm<\/td>\n\u22488.49\u00a0kg<\/strong><\/td>\n\u22487.07\u20139.92\u00a0kg<\/td>\n<\/tr>\n
6\u00a0mm<\/td>\n\u224816.97\u00a0kg<\/strong><\/td>\n\u224815.55\u201318.40\u00a0kg<\/td>\n<\/tr>\n
10\u00a0mm<\/td>\n\u224828.29\u00a0kg<\/strong><\/td>\n\u224826.85\u201329.73\u00a0kg<\/td>\n<\/tr>\n
12\u00a0mm<\/td>\n\u224833.95\u00a0kg<\/strong><\/td>\n\u224832.51\u201335.39\u00a0kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Weight varies with actual thickness, density and environment. For freight planning, we can quote per-sheet average and pallet totals.<\/small><\/p>\n

Why Tolerance & Flatness Matter in Real Work<\/h2>\n