大口径直缝钢管生产的成品质量保证，效率高，成本低，并且靠着一条竖焊缝的优势，很快打进了大口径钢管市场，质量可满足输送管道，打桩，钢支撑，地铁立柱，钢管桩等等，销量非常可观，主要是价格合适，1020mm一下规格采用一条焊缝，1020mm以上建议采用两条焊缝，将两张钢板拼接在进行生产，这样可减少成本价格较低一些。
The finished products produced by large-diameter straight seam steel pipes are guaranteed in quality, with high efficiency and low cost. Relying on the advantage of a vertical weld, they quickly entered the large-diameter steel pipe market. The quality can meet the requirements of transmission pipelines, piling, steel supports, subway columns, steel pipe piles, etc. The sales volume is very considerable. The main reason is that the price is appropriate. One weld is used for sizes below 1020mm, and two welds are recommended for sizes above 1020mm. Two steel plates are spliced for production, This can reduce the cost and lower the price.
一般来讲小口径直缝钢管基本都是现货供应，口径小易存放占用的面积较小，也可往高处码放，并且压的钱也少一些，所以大口径直缝钢管630mm以上基本都要定做加工，因为库存占地方不敢码放太高容易坍塌，并且压的本钱也比较大。
Generally speaking, the small-diameter straight seam steel pipes are basically supplied from stock. The small-diameter straight seam steel pipes are easy to store and occupy a small area. They can also be stacked high, and the cost of pressing is less. Therefore, the large-diameter straight seam steel pipes above 630mm are basically customized. Because the inventory is too high to stack, it is easy to collapse, and the cost of pressing is relatively large.
一般直缝钢管厂都是库存现板或钢厂定扎钢板，周期可能会长一些，例如630*12mm正常现板的交期时间是7-15天左右，即便是库存钢板也不会所有壁厚都存，壁厚没有库存只能在钢厂定扎，那样生产的周期就要延长一些，钢厂定扎板材最快要15-25天左右交货，回厂在进行生产也要5天左右，所以一般原材料钢厂定扎需要20-30天左右交货。
Generally, straight seam steel pipe plants stock existing steel plates or steel plates fixed by the steel plant, and the cycle may be longer. For example, the delivery time of 630*12mm normal existing steel plates is about 7-15 days. Even if the stock steel plates do not have all the wall thickness, they can only be fixed in the steel plant without inventory. In that way, the production cycle will be extended. The steel plant fixed steel plates will be delivered in about 15-25 days at the earliest, and it will take about 5 days to return to the plant for production, Therefore, it takes about 20-30 days for the general raw material steel factory to make the delivery.
打桩，桥梁，支撑等工程使用大口径直缝钢管较多，一般这些工程都会提前预定或计划，避免耽误工期造成损失，但还会有一些工程没有做好提前的计划和预算，钢管到不了导致工程延误工人没活干，会造成经济的亏损，只能找厂家定加急。
Large diameter straight seam steel pipes are widely used in piling, bridges, supports and other projects. Generally, these projects will be scheduled or planned in advance to avoid the loss caused by the delay of construction period. However, there will be some projects that do not have a good plan and budget in advance. The failure of the steel pipes to arrive will lead to the delay of the project and the lack of work, which will cause economic losses. We can only find the manufacturer to make an urgent decision.
看有没有现货或者合适壁厚的现板，时间上争取一些，有现板加急5天可陆续交货，钢厂定扎加急钢板最快也要10-15天陆续交货，但价格肯定会高一些，因为原材加急也要加钱。所有建议有订单应早做计划，避免花一些不必要的冤枉钱。
See if there are any existing plates in stock or with appropriate wall thickness, and strive for some time. If there are existing plates that can be delivered in 5 days after being expedited, the steel factory will deliver the expedited steel plates in 10-15 days as soon as possible, but the price will certainly be higher, because the raw materials also need to be paid for expediting. It is suggested that all orders should be planned early to avoid spending some unnecessary money.
