O.D. Ground Precision Tubing

A: For standard sizes and common steel grades (such as E355, ST52, or CK45) that we have in stock or in our regular production schedule, the MOQ is 1 to 3 tons. For customized sizes, specific alloy grades, or rare heat treatment conditions, the MOQ will be evaluated case-by-case. Please share your detailed requirements with our sales team for an exact solution.

A: Yes, absolutely. Centerless grinding to precise tolerances is our core capability. We routinely manufacture tubes to ISO f7, f8, g6, h7, and h8 tolerances. When submitting your inquiry, simply specify your required tolerance zone, and our engineering team will ensure it is strictly met.

A: Transparency is key to our business. Every shipment includes a comprehensive EN 10204 3.1 Material Test Certificate (MTC). This official document details the raw material heat number, exact chemical composition, mechanical properties (tensile, yield, elongation), heat treatment state, and all dimensional inspection results.

A: Yes, we provide a complete, ready-to-assemble solution. Beyond supplying random manufacturing lengths, we offer precision cut-to-length services to your exact millimeter specifications. We can also perform secondary machining operations such as chamfering, threading, turning, and centering based on your engineering drawings.

A: For raw materials already in stock, processing and grinding can be completed for shipment within 7 to 10 days. For standard customized production runs, our typical lead time ranges from 30 to 45 days, depending on the order volume, steel grade availability, and the complexity of the required testing.

A: We utilize a multi-layer protective packaging system. First, we apply high-grade industrial anti-rust oil. Second, we wrap each tube individually in a protective sleeve to prevent scratching. Finally, all tubes are packed tightly into heavy-duty, reinforced seaworthy wooden boxes lined with waterproof barriers to insulate them from sea moisture and rough handling.