แผ่นพื้นเหล็ก Things To Know Before You Buy
Metal decking really should hardly ever be set in position with no predetermined pattern. The engineer of document bears the responsibility to declare which fastening type and sample is best fitted to a certain job.เหมาะกับโครงสร้างเหล็กและโครงสร้างคอนกรีตทำพื