Which 30% hydrochloric acid pipe material should be chosen at room temperature? What material is PEM?
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This post was last edited by henjuese on 2018-6-22 at 15:05. Dear colleagues: For 30% of the room-temperature hydrochloric acid used in our company, the pipeline material is PEM, as shown in the figure below. I would like to ask my colleagues what this PEM material is It’s my first time encountering this; is it available in China? The image below shows the pipes at our company’s site: the black pipes here are PEM. If PEM is not used, what material would be suitable instead (30% hydrochloric acid, room temperature)?
Steel-lined PO pipes are quite useful; they have better resistance to aging and higher strength as well
FRP pipeline bar
We usually use PTFE-lined pipes
Thank you! I see that most use plastic-lined steel pipes.
The steel-lined F4 is more durable than the PO-lined version
This post was last edited by BAUM_XKRO on 2018-6-26 08:58. At normal temperatures and with low pressure, PP pipes are sufficient; they offer good cost-performance, but they tend to bend and sag over time. Fiberglass is also fine. Furthermore, plastic pipes have a high coefficient of thermal expansion, which must be taken into account during design. In the presence of a vacuum and at high temperatures, it is recommended to use carbon steel lined with PTFE; if budget permits, carbon steel lined with PTFE is still the best choice, as it offers better corrosion resistance and a longer service life. You can contact me if needed. Baum Fluoroplastics (Shanghai) Co., Ltd. is affiliated with German BAUM, the largest company in Europe specializing in lining materials. Specializing in high-end PTFE/PFA/PVDF/PP pipes, fittings, and expansion joints for use in the chemical and pharmaceutical industries. For more details, please visit our website: www.baumkunststoffe.com
For hydrochloric acid pipes at room temperature, FRP, PP, or PVC can be used