Square hole grid tube, Xiong Wang Thai (certified), Hebei District grill pipe provided by Xiong Wang Thai Plastic Products Factory. Xiong Wang Thai Plastic Products Factory (www.wangtai668.com) is specialized in the "plastic tube, MPP power tube, CPVC pipe electricity, irrigation pipes, HDPE pipes, p" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Fengjing Li. 3, the structure of the grid tubes offer innovative, saving tube position. Overall structure of arc angle square, arranged neatly convenience. Occupancy tube bit small communications grid tubes, only 10% of the cement tube position, the small amount of excavation, saving urban underground pipe-bit resource telecommunications grid tubes, less impact on road traffic and municipal. After the pipe trench backfill abalone grille grille laying pipe in the trench is completed, the supervising engineer confirmed by checking compliance with quality standards before backfilling, fine soil backfill or pulverizer first predetermined thickness, and then backfill required height. Xiong Wang Thai Plastic Products Factory