The best storage methods and techniques for welded pipe products in a steel pipe factory.
2013-11-01
Choose a suitable site and warehouse (1) StorageSteel pipesThe site or warehouse for storing steel pipes should be chosen in a clean and tidy place with good drainage, away from factories that produce harmful gases or dust. We should clear weeds and all debris on the site to keep it clean.Steel pipesClean (2) In the warehouse, do not store together with materials that are corrosive, such as acids, alkalis, salts, and cement.Steel pipesDifferent varieties of materials should be stored separately to prevent confusion and contact corrosion.Steel pipes(3) Large steel sections, rails, steel plates, large diameter forgings, etc., can be stored outdoors. (4) Medium and small steel sections, coils, rebar, medium diameter wires and ropes can be stored in well-ventilated sheds but must be covered on top and supported underneath.Steel pipes(5) Some small items like thin steel plates, steel strips, silicon steel sheets, small diameter or thin-walled products, various cold-rolled or cold-drawn items as well as high-priced and easily corrodible metal products can be stored indoors. (6) The warehouse should be selected based on geographical conditions. Generally, a common closed warehouse is used; that is to say it has a roof with walls and tightly sealed doors and windows along with ventilation facilities.Steel pipes(7) The warehouse requires attention to ventilation on sunny days and moisture prevention on rainy days to maintain a suitable storage environment regularly. 2. Reasonable stacking and first-in-first-outSteel pipes(1) The principle of stacking requires that under stable stacking conditions ensuring safety, materials should be stacked by variety and specification. Different varieties of materials must be stacked separately to prevent confusion and mutual corrosion.Steel pipes(2) It is prohibited to store corrosive items near the stacking area.Steel pipes(3) The bottom of the stack should be elevated, solid, and flat to prevent materials from getting damp or deformed. (4) Materials of the same type should be stacked according to their entry into the warehouse for easy implementation of the first-in-first-out principle. (5) For outdoor-stacked steel sections, there must be wooden pads or stone strips underneath; the surface of the stack should have a slight slope for drainage while ensuring that materials are placed straight to prevent bending deformation. (6) The height of stacks for manual operations should not exceed 1.2m; for mechanical operations it should not exceed 1.5m; stack width should not exceed 2.5m. (7) There should be certain aisles between stacks; generally an inspection aisle is about O.5m wide while access aisles depend on material size and transport machinery but are generally about 1.5–2.Om wide. (8) The bottom of stacks must be elevated; if the warehouse has a sunlit cement floor it can be elevated by O.1m; if it's dirt ground it needs an elevation of O.2–0.5m. If it's an outdoor area with cement ground elevate by O·3–O·5m; sandy soil needs an elevation of O.5–O·7m.Steel pipes(9) Outdoor-stacked angle steels and channel steels should lie flat with openings facing downwards while I-beams should stand upright; I-beam surfaces cannot face upwards to avoid rusting due to water accumulation. 3. Protecting material packaging and protective layers: The anti-corrosive agents or other coatings applied before leaving the factory are important measures against material rusting; care must be taken during transportation loading/unloading processes not to damage them which can extend storage life for materials. 4. Keep warehouses clean and strengthen material maintenance (1) Before entering storage materials must avoid rain exposure or contamination with impurities; different methods must apply for cleaning already wet or contaminated materials based on their properties—for high hardness use wire brushes while low hardness ones use cloths or cotton etc. (2) After entering storage regularly check materials; if rust occurs remove rust layers promptly. (3) Generally after cleaning surfaces do not need oiling but high-quality steels alloy thin plates thin-walled pipes alloys etc., after derusting both inner & outer surfaces need anti-rust oil before storage. (4) For severely rusted items after derusting they shouldn't remain in storage long-term but used as soon as possible. (9)露天堆放角钢和槽钢应俯放，即口朝下，工字钢应立放，Steel pipes的I槽面不能朝上，以免积水生锈 3．保护材料的包装和保护层 钢厂出厂前涂的防腐剂或其他镀复及包装，这是防止材料锈蚀的重要措施，在运输装卸过程中须注意保护，不能损坏，可延长材料的保管期限 4．保持仓库清洁、加强材料养护 (1)材料在入库前要注意防止雨淋或混入杂质，对已经淋雨或弄污的材料要按其性质采用不同的方法擦净，如硬度高的可用钢丝刷，硬度低的用布、棉等物 (2)材料入库后要经常检查，如有锈蚀，应清除锈蚀层 (3)一般Steel pipes表面清除于净后，不必涂油，但对优质钢、合金薄钢板、薄壁管、合金Steel pipes等，除锈后其内外表面均需涂防锈油后再存放 (4)对锈蚀较严重的Steel pipes，除锈后不宜长期保管，应尽快使用
