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1. Product Overview This device is manufactured in accordance with Clause 25.4 and Figure 38 of GB 2099.1‑2008, Figure 38 of IEC 60884‑1, VDE 0620, and other relevant standards. It is used to evaluate the dielectric strength of electrical accessories and surface-mounted installation boxes under thermal conditions, and is intended for use in conjunction with a heating chamber. 2. Structural Composition 2. Main Technical Parameters The thermal compression test apparatus consists of a movable pressure block, a fixed pressure block, and a rail support. Each pressure block features a cylindrical surface with a radius of R = 25 mm, rounded corners with a fillet radius of R = 2.5 mm, and a weight of 20 N.
Electrical conduit gauge set material: Steel. This gauge set refers to all gauges specified in “JG 3050-1998 Electrical Conduit” for measuring relevant dimensions of conduit tubing. The set is applicable to circular electrical conduits made of plastic insulating materials, used within buildings or structures to protect and secure the routing of wires or cables. It includes: Image 2 of “JG 3050-1998 Electrical Conduit”—maximum outer diameter gauge; Image 3—minimum outer diameter gauge; Image 4—minimum outer diameter gauge for semi-rigid and corrugated conduits; Image 5—minimum inner diameter gauge; Image 6—minimum inner diameter gauge; Image 11—threaded gauge; Image 12—minimum inner diameter gauge after bending for semi-rigid and corrugated conduits; and Image 13—minimum inner diameter gauge after bending for rigid conduits, totaling 45 items. Specifically: In Image 2, the maximum outer diameter gauges comprise seven pieces with a manufacturing tolerance of +0.04 mm; their dimensions are as follows: gauge sizes 16, 20, 25, 32, 40, 50, and 63, with corresponding inner diameters of 16.04, 20.04, 25.04, 32.04, 40.04, 50.04, and 63.04, and gauge diameters of 45, 45, 60, 70, 70, 85, and 100. In Image 3, the minimum outer diameter gauges also consist of seven pieces with a manufacturing tolerance of −0.01 mm; their sizes are: gauge sizes 16, 20, 25, 32, 40, 50, and 63, with corresponding inner diameters of 15.7, 19.7, 24.6, 31.6, 39.6, 49.5, and 62.4, and standard thicknesses of 8, 9, 9, 10, 10, 12, and 12. In Image 4, the minimum outer diameter gauges for semi‑rigid and corrugated conduits include seven pieces with a manufacturing tolerance of −0.01 mm; their sizes are: gauge sizes 16, 20, 25, 32, 40, 50, and 63, with corresponding inner diameters of 15.7, 19.7, 24.6, 31.6, 39.6, 49.5, and 62.4, and standard thicknesses of 24, 24, 32, 36, 36, 40, and 40. In Image 5, the minimum inner diameter gauges comprise seven pieces with a manufacturing tolerance of −0.01 mm; their external dimensions are 11.9, 15.5, 20.3, 26.3, 34.1, 42.8, and 55.2, corresponding to gauge sizes 16, 20, 25, 32, 40, 50, and 63, with respective inner diameters of 11.9, 15.5, 20.3, 26.3, 34.1, 42.8, and 55.2.
JLD-85012 Thermal Load Tester for Rock Wool Insulation
This instrument is a testing device developed in accordance with the technical requirements specified in GB/T 11835-2007, “Rock Wool, Slag Wool, and Their Products for Thermal Insulation,” and also complies with the test method for thermal‑load‑induced shrinkage temperature outlined in GBT 5480-2017, “Test Methods for Mineral Wool and Its Products.” The product features a well‑designed structure, touchscreen control, a high degree of automation, accurate timing, stable performance, and user‑friendly operation. Measurement data can be stored directly on the touchscreen and historical records can be retrieved at any time.
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