Specializing in wear and corrosion resistance, a premium provider of cast stone resources.
What are the steps for the final inspection of cast stone composite pipes?
2026-08-03
The inspection of cast stone composite pipes spans the entire production and construction workflow. Guided by principles of high standards, strict requirements, and rigorous implementation, we ensure that every stage is controllable and traceable.
What are the steps for the final inspection of cast stone composite pipes?
Join Xiao'an from Penglai Hua'an Cast Stone Pipe Fittings Co., Ltd. as we explore the process:
The inspection of cast stone composite pipes spans the entire production and construction workflow. Guided by principles of high standards, strict requirements, and rigorous implementation, we ensure that every stage is controllable and traceable.
First, a specialized inspection is conducted on the density of the mortar filling. When grout is pumped into the gap between the steel pipe and the cast stone pipe, vibrators are used to ensure compaction; internal voids must not exceed 0.5 cm³. A small hammer tapping method is employed to check for voids section by section, ensuring there are no hidden defects in the filling layer.
Second, regarding end-face quality, a steel ruler is used to verify the pipe ends. After grinding the end face smooth, the boundaries between the steel pipe, the filling layer, and the cast stone layer must be clearly defined. The height difference between the cast stone pipe and the steel pipe cross-sections is strictly controlled to within 3 mm to ensure a precise fit at the joint.
Third, for rust removal and anti-corrosion coating inspections, rust removal is performed using either wire brushes or sandblasting, as specified in the contract. After coating, a thickness gauge measures the film thickness to ensure anti-corrosion performance meets standards.
Welding inspections involve flaw detection; results must comply with design and construction acceptance specifications, and comprehensive flaw detection reports are retained. Defects such as cracks, weld spatter, burn-through, arc craters, porosity, undercut, and slag inclusions are strictly prohibited.
The company is equipped with ultrasonic flaw detectors, friction coefficient testers, coating thickness gauges, and flatness testing rulers, using data-driven methods to support every assessment. Throughout the inspection system—from material processing to final product acceptance—every step is measured against rigorous criteria. No minor gaps, unevenness, or coating deviations are overlooked, and inspection records are archived for future reference, ultimately ensuring the long-term safe operation and service quality of the cast stone composite pipes.
Penglai Hua'an Cast Stone Pipe Fittings Co., Ltd.
Specializing in wear-resistant and anti-corrosion solutions; a premium supplier of cast stone materials
Mobile: +86-13562597539
Tel: +86-535-3355103
Email: manager@hazsgj.cn
Website: https://www.hazsgj.cn/
Address: No. 1 Banning Road, Nanwang Industrial Park, Penglai, China
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Penglai Hua'an Cast Stone Pipe Fittings Co., Ltd.
Fax: +86-535-5627588
Address: No. 1, Banning Road, Nanwang Industrial Park, Penglai, China