About Shipping: 1. Our products are available from stock, grating agents, part of the screen mesh products or special period of special specifications will be out of stock, we will inform the buyer in advance, can be ordered in advance. 2. The factory is equipped with special delivery vehicles, grating, packaged goods professional staff, your payment within 24 hours, with the fastest speed for your shipment. (Due to the special circumstances delayed shipments, please understand.) Shipping Description: Our factory prices quoted are ex-factory price excluding tax and shipping, and our factory has cooperation with major logistics companies, will not be arbitrarily Shipment Happening. For platform walkway design requirements: We design for Steel Grating platforms designed to withstand design loads calculation, which the deflection is not greater than the span of 1/00, platform aisle can not exceed 10mm, grating price, in addition to meeting the above requirements, all platforms should meet the following requirements: a, the design load value X1.5, to Yasumasa without permanent deformation b, when the design load value X3.0, Yasumasa not crack c, under special loading conditions The design requirements for mutually agreed by both parties stair treads design requirements: stair treads in the design when the load weight, pay attention to any of the treads midpoint deflection of not greater than 1/200 of the span, the maximum should not exceed 6mm, In addition to meeting the above requirements, all treads shall conform to the following specifications. Grating Manufacturers | En screen thousands of custom steel grating (certified) | grid sheet provided by thousands of ex Anping Wire Mesh Products Co., Anping Wire Mesh Products Co., one thousand ex (www.hbqianen.com) (www.qianenwangye.com) Hebei Hengshui, the wire mesh of the leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. En screen for thousands of leadership with the staff warmly welcome all inquiries negotiations to create one thousand ex mesh better future.