1″ (33.25-33.35mm) hot dipped galvanized steel pipe for roller shutter door shaft. All our galvanized pipe made by China top steel mills, quality is the first.
1 "(33.25-33.35mm) ຈຸ່ມຮ້ອນທໍ່ເຫຼັກ galvanized ສໍາລັບການ shaft ປະຕູປະຕູມ້ວນ. ທັງຫມົດທໍ່ galvanized ຂອງພວກເຮົາໄດ້ໂດຍຈີນເຫຼັກເທິງ, ຄຸນະພາບເປັນຄັ້ງທໍາອິດ.