Australian customer purchase powder coating pre galvanized steel square tube. After customers receives the goods for the first time . Customer tests adhesive strength between the powder and the surface of the square tube .Customers test powder and square surface adhesion is small . We have meetings with customers to discuss this problem and we do tests all the time . we polished the surface of the square tube . Send the polished square tube to the heating furnace for heating . We tests all the time and discuss with customer all the time . We keep finding ways . After many tests, the final customer is very satisfied with the products. Now customer purchase a large number of products from factory every month .
Frequently Asked Questions (FAQ)
What are HSAW and SSAW steel pipes?
HSAW (Helical Submerged Arc Welded) and SSAW (Spiral Submerged Arc Welded) steel pipes are manufactured using spiral weld technology with submerged arc welding processes. They are widely used in pipeline systems for transporting fluids, gas, and structural piling applications.
What range of pipe sizes and dimensions do you supply?
We support a wide range of custom specifications, featuring wall thicknesses from 6.0mm to 25.4mm, outer diameters ranging from 219mm to 3000mm, and lengths from 1m to 12m to suit various project requirements.
What quality standards and certificates do your steel pipes comply with?
Our products are manufactured according to GB/T9711.1 and API 5L standards. They are fully certified by international standard authorities including ISO, BV, CE, and SGS.
Are you a direct factory or a trading company?
We are a direct manufacturing factory. Because we produce the products in our own facility, we can offer competitive factory pricing and have full control over the quality check and delivery timelines.
Can we inspect the steel pipes before shipment?
Yes, absolutely. We welcome customers or third-party inspection institutions (such as SGS or BV) to visit our factory for inspection before the goods are shipped out.
Minjie Steel
