Buying Guide

Steel plate cutting in Bingfa’s fabrication workshop. Why Two Material Scenarios Need Separate Quotes An overseas buyer sends drawings specifying ASTM A992 or EN S355JR steel. The Chinese manufacturer may find that the originally specified material is not immediately available at the required sections, quantities or delivery window. The manufacturer may then propose a candidate

Why Bay Spacing Deserves a Side-by-Side Comparison A buyer comparing 6m, 8m and 9m bay spacing is usually looking at the same workshop footprint and asking whether fewer frames will reduce the total project cost. Frame count is only one part of the answer. The comparison also involves the primary frames, secondary steel, bracing, connections,

Quick Answer When a supplier provides a sandwich panel fire document, first confirm which type of fire performance the project requires. Reaction to fire, fire resistance and external fire exposure to roofs evaluate different things. Then check the document type, the product identity, the evaluated scope and the actual installation configuration. A single fire class

Quick Answer A trial assembly before shipment should start with a specific question about member fit or a defined interface. Identify the members and interfaces to be checked and link them to the order and drawing revision. Agree the actual scope, the checks to be performed and the records to be kept. Then confirm how

Quick Answer A Welding Procedure Specification (WPS) describes the welding method and variables to be used in production. Where qualification uses a procedure test, a Procedure Qualification Record (PQR) or Welding Procedure Qualification Record (WPQR) records test conditions and results. The document name follows the applicable standard. Welder qualification evidence concerns the individual’s ability and

Quick Answer When comparing supplier data, first confirm the metric, the unit, the material or assembly it describes, and the test or calculation conditions. The same thickness or a numerically larger R-value does not by itself prove that one finished panel performs better than another. A core R-value and a panel U-value describe different things,

A clear sandwich panel schedule gives a supplier more useful information than one total area. This guide explains how to organise roof and wall dimensions into panel lengths, piece counts and questions to resolve before ordering. The examples use hypothetical dimensions, not Bingfa product specifications or real projects. Final quantities and product dimensions should follow