Production method of stainless steel seamless pipe

Stainless steel seamless pipe according to the different production methods can be divided into hot rolling, cold rolling tube, cold drawn tubes, extruded tube, etc.

The classification and application of the stainless steel pipe

A, the classification of stainless steel pipe

1, according to the production method of classification:

(1) seamless tube, cold drawn tube, extrusion tube, cold rolling tube.

(2) welded pipe:

(a) according to the process classification, gas shielded welding pipe, arc welding, resistance welding pipe (high frequency and low frequency).

(b) the weld points - straight seam welded pipe, spiral welded pipe.

Characteristics of seamless steel pipe By yaang.com

Characteristics of seamless steel pipe products:
1, chemical analysis: the chemical composition of the chemical analysis, chemical composition in line with the standard requirements.

Forming process for seamless pipe fittings (1)

Seamless steel pipe refers to the use of seamless tube or steel manufacturing without weld pipe fittings. In recent years, due to the improvement of welded pipe manufacturing, some in the engineering design of welded pipe manufacturing pipe fittings is often used, especially the thin wall stainless steel weld pipe manufacturing pipe proportion increase quickly. For stamping process adopted by the welded tubes and seamless pipe is roughly same, the seamless pipe forming process of reason described here can also be applied to welded pipe manufacturing the pipe.

Steel Tube Pipe Classification By yaang.com

I Steel Tube Classification
1、according to production methods classification
（1）seamless pipe - hot-rolled pipes, cold-rolled pipes, cold-drawn tubes, extruded tubes, pipe jacking
（2）Welded Pipe
（a）in accordance with sub-processes - arc welded pipe, ERW pipe (high frequency, low frequency), gas pipe, furnace pipe
（b）by weld points - Longitudinal Welded Pipe, Spi Welded Pipe

Seamless Steel Pipe Price Trend

In June, seamless steel pipe prices have been followed by the reduction in strip steel prices fell after the settlement conference, strip prices despite a rebound, but the price of seamless steel pipe did not immediately follow up with signs, what is the reason for such a trend for seamless steel pipe prices? Here to make a specific analysis: 

Firstly, the Steel market is still in the off-season, multiple high temperature and heavy rains, outdoor operating situation has not improved also. Engineering projects remain small, limited end-user demand, few stocking, and excessive inventory will also cause backlog in the pipe factory. 

Secondly, in the background of the whole industry being at a loss, many large trader dealers are reducing their inventories, and some smaller agreement clients choose the operation mode shipping directly from steel household not taking inventory of steel to avoid risks. Besides,with the strict limits to bank loans for the steel industry , many traders find it difficult to survive here.it would be difficult to achieve a breakthrough If there is no support of national policy,, the latter situation is still not optimistic. 

Thirdly, although have the intention to control the inventory and avoid becoming a drag on stock funds , once the market improves, increase production, steel mills control action on the power loss in the collapse, is a "temporary solution" 

To sum up: steel mills to take reasonable measures to control inventory, but for the price adjustment is not positive, most think the price adjustment action to stimulate the turnover is limited, so to stabilize the main quote. Further plants are considered excessive tube and steel pipe price spread between the price decrease in profit margins narrowed, there is not enough profit, few companies are willing to loss Paohuo. In the case of weak demand, seamless steel pipe market is difficult to quickly reverse the vulnerable situation, there is no real price rally conditions. Short-term pipe prices still weak consolidation, Change dilemma appears.

Source - AltEnergyMag