【History of Haichuan Pipes】In 2015, the world’s largest-bore bamboo-based pressure pipe was produced in Xiangyang

　It is understood that bamboo-wrapped composite pressure pipes are biomass pipes with high compressive strength, manufactured using bamboo as the base material and resin as the adhesive through a mechanical wrapping process. The product makes full use of the good elasticity and toughness of bamboo, improving its physical properties; it boasts strong seismic and settlement resistance as well as excellent thermal insulation capabilities. Bamboo-wrapped composite pressure pipes can have a service life of 50 to 70 years, and they can degrade naturally once their useful life is over. This product can replace metal pipes, concrete pipes, PVC pipes, and fiberglass pipes, and is widely used in areas such as agricultural irrigation, urban water supply, oil and gas transportation, and the laying of optical cables and electrical wires.

Application effects of bamboo-based composite pressure pipes: The widespread use of bamboo composite pressure pipes in fields such as water supply and drainage, agricultural irrigation, seawater transportation, and power plant circulating water can replace a large number of traditional pipes such as spiral welded pipes, polyethylene pipes, and cement pipes. They offer significant benefits in terms of resource substitution, energy savings and carbon reduction, carbon sequestration, as well as economic and social advantages. (1) Resource substitution benefit: Assuming that by 2020 the production of bamboo composite pressure pipes will reach 10 million tons, if these replace all spiral welded pipes, it would be possible to substitute 33.6 million tons of spiral welded pipes (equivalent to 67% of the current production of such pipes). This in turn would allow for the substitution of 45 million tons of crude steel, which is equivalent to 5.8% of China’s crude steel production in 2013 ； It is possible to save 72 million tons of iron ore usage, which is equivalent to 8.8% of China’s iron ore imports in 2013. In the field of urban drainage, if bamboo composite pressure pipes are used for all 159,000 kilometers of drainage pipes to be built during the 12th Five-Year Plan period, they can replace 316 million tons of concrete pipes; this would result in a savings of 50.9 million tons of cement, equivalent to 2.1% of China’s cement production in 2013. In the field of agricultural irrigation, if bamboo composite pressure pipes are used for all 2.4 million kilometers of irrigation pipelines to be built during the 13th Five-Year Plan period, they can replace nearly 85 million tons of polyethylene pipes; this would result in a savings of 86.5 million tons of ethylene, equivalent to 5 times China’s ethylene production in 2013. If the existing 110 million tons of idle bamboo resources are fully utilized, a variety of products such as bamboo composite pressure pipes, storage tanks, chimneys, and utility poles can be produced, which can replace large amounts of steel, plastic, cement, and other materials. (2) Energy-saving and carbon-reduction benefits: Assuming that by 2020 the production volume of bamboo composite pressure pipes reaches 10 million tons, if they replace all spiral-welded pipes, it will be possible to save 22.33 million tons of standard coal in the pipeline production process, with nearly 50 million tons of carbon dioxide emissions reduced as a result. In the field of urban drainage, if bamboo composite pressure pipes are used for all 159,000 kilometers of drainage pipes to be built during the 12th Five-Year Plan period, compared with cement concrete pipes, this would result in energy savings of 8.04 million tons of standard coal in the pipe production process, as well as a reduction of 19.75 million tons of carbon dioxide emissions. In the field of agricultural irrigation, if bamboo composite pressure pipes are used for all 2.4 million kilometers of agricultural irrigation pipelines to be built during the 13th Five-Year Plan period, compared with the use of polyethylene pipes, it would be possible to save 82 million tons of standard coal in the pipeline production process, as well as reduce carbon dioxide emissions by 200 million tons. If all of the existing 110 million tons of unused bamboo resources were used to produce bamboo composites as a substitute for materials such as steel and plastics, which have high energy consumption and emission levels, it is estimated that energy savings of over 140 million tons could be achieved. This amount corresponds to 3.7% of China’s total energy consumption in 2013. Additionally, 350 million tons of carbon dioxide emissions could be reduced, which is equivalent to 3.5% of China’s total carbon dioxide emissions. This is of great significance for China in achieving its energy-saving and emission-reduction goals by 2020. (3) Carbon sequestration benefits: As the main raw material for bamboo composite pressure pipes, bamboo possesses a strong capacity for carbon sequestration and storage, which is 1.46 times that of fir and 1.33 times that of tropical rainforests. Nevertheless, the biomass of bamboo is relatively low; only by continuously recycling bamboo resources can its carbon sequestration benefits be maximized. Therefore, regularly harvesting bamboo to produce bamboo composite pressure pipes not only enables energy savings and carbon reduction during the pipe production process, but also traps the carbon absorbed by bamboo during its growth within these pipes, resulting in a carbon sequestration effect that lasts for decades. This approach is more effective and direct than other forms of biomass utilization such as biomass power generation and biomass combustion in terms of carbon reduction. In a sense, given the absence of more economical and reliable carbon sequestration technologies at present, the use of bamboo composite pressure pipes helps to delay the release of carbon from biomass, which is of great significance for alleviating the pressure associated with greenhouse gas emissions. Taking Zhejiang Province as an example: the province has 653,500 hectares of moso bamboo forests, with a total of 1.66 billion moso bamboo plants. Among them, the newly grown young Phyllostachys bambusae accounted for 12.3%, amounting to about 200 million plants. Based on this calculation, over an 8-year period, selectively harvesting 200 million mature young moso bamboo plants would result in approximately 2.2 million tons more carbon storage compared to allowing them to grow naturally, which is equivalent to storing over 8 million tons of carbon dioxide. Based on this simple calculation, if all 1.66 billion moso bamboo plants in Zhejiang Province were harvested and utilized, at least 65 million tons more carbon dioxide could be stored compared to allowing them to grow naturally and die off on their own. Based on this simple calculation, over an 8-year period, if all 28.635 billion standing bamboo plants across the country were selectively harvested and utilized, at least 1.13 billion tons more carbon dioxide could be stored compared to allowing the bamboo to grow naturally. This amount corresponds to 11.3% of China’s total carbon dioxide emissions (10 billion tons), making it significant for controlling greenhouse gas emissions and addressing climate change.

【History of Haichuan Pipes】The summary post is being updated continuously; learn about the development process of various pipes at https://bbs.hcbbs.com/thread-3068575-1-1.html (Source: Haichuan Chemical Forum – Chemical Currents of Haichuan)

Liu Xianmiao, Secretary-General of the National Bamboo and Rattan Standardization Technical Committee and Deputy Director of the Industry Department at the International Bamboo and Rattan Center, said that the bamboo-wrapped composite pipe industry constitutes a strategic emerging industry in China. The development of standards for this industry helps to standardize products, facilitates standardized management by relevant authorities, enhances the credibility of these products, regulates the market, promotes the widespread use of bamboo composite pressure pipes, accelerates the replacement of traditional pipes with high energy consumption and high emission levels, and contributes to the sustainable development of society； It helps develop the rural economy, increases the income of bamboo farmers, enables targeted poverty alleviation, and adds highlights to the export of high-tech products under the Belt and Road Initiative. “The development of the national standard for \"Bamboo Composite Pressure Pipes\" helps to increase the income of farmers in bamboo-growing areas and improve their living standards, bringing significant social benefits ； It helps to promote technological progress and achieve the goals of resource conservation, energy savings, and carbon reduction. ”The person in charge of Zhejiang Xinzhou Bamboo-Based Composite Materials Technology Co., Ltd. said that at a cost of 800 yuan per ton of bamboo, 10 million tons of bamboo composite pressure pipes would require 25 million tons of moso bamboo, resulting in a total cost of 20 billion yuan ； Based on the assumption that each farming household can supply 5 tons of bamboo, this can benefit 5 million households, with an increase in income per household of around 4,000 yuan ； Based on an output of 10 million tons of bamboo composite pressure pipes, these can replace 33.6 million tons of welded steel pipes; in turn, this allows for the substitution of 45 million tons of crude steel. It also results in savings of 72 million tons of iron ore, as well as a reduction in carbon emissions of around 83 million tons. At the meeting, an outline for formulating the **standard for bamboo composite pressure pipes** was established. The experts present suggested including performance specifications and testing methods for the key raw materials required for the production of such pipes, as well as establishing an information management system for these pipes, in order to reflect the unique characteristics of bamboo composite pressure pipes as well as the demands of the current era ； It is recommended that the name of this standard be changed to \"Bamboo-Wound Composite Pipe\" ； The participating organizations and standard drafters were identified, and the responsibilities within the drafting team as well as the timeline for development were established. The total duration for completion is one year; it is expected that a draft of the standard will be ready for submission to the **Standardization Management Committee by November 2018. At the conference, the National Bamboo and Rattan Standardization Technical Committee and Zhejiang Xinzhou Bamboo-Based Composite Materials Technology Co., Ltd. also signed a cooperation agreement regarding the standard development project for **Bamboo Composite Pressure Pipes**. The reporter learned that the **standard for bamboo composite pressure pipes** was proposed and is under the jurisdiction of the National Bamboo and Rattan Standardization Technical Committee; the leading organizations in formulating this standard are Zhejiang Xinzhou Bamboo-Based Composite Materials Technology Co., Ltd. and the International Bamboo and Rattan Center ； The participating organizations include: China Association for Engineering Standardization, China Railway Construction Corporation, Pipeline Structure Professional Committee of China Association for Engineering Standardization, China Institute of Water Resources and Hydropower Research, Heilongjiang Provincial Institute of Water Resources Research, Xinjiang Production and Construction Corps Survey and Design Institute (Group) Co., Ltd., Ningxia Department of Water Resources, Zhejiang Water Resources and Hydropower Survey and Design Institute, Zhejiang Urban and Rural Planning and Design Institute, Shanghai Municipal Engineering Design and Research Institute (Group) Co., Ltd., Sinopec Petroleum Engineering Design Co., Ltd., North China Water Resources Survey, Design and Research Co., Ltd., Dayu Water Saving Group Co., Ltd., and China Railway 18th Bureau Group Co., Ltd.

Reported by journalist Liu Lufei: On June 15, 2015, a seminar on the formulation of the \"Design, Construction and Acceptance Specifications for Bamboo Composite Pressure Pipes\" was held at the China Science and Technology Convention Center in Beijing. This seminar examined the operability and rationality of the framework structure and chapter provisions of the \"Code for Construction and Acceptance of Bamboo Composite Pressure Pipes\" and the \"Bamboo Composite Pressure Pipes ** Standards\", as well as the relationship between the commonalities and characteristics they reflect. The topics covered included quality inspection, construction, maintenance, pressure testing, and acceptance of bamboo composite pressure pipes, in addition to various performance indicators, dimensional standards, and specification requirements. Bamboo-wrapped composite pressure pipes are biomass pipes made using bamboo as a reinforcing material and manufactured through mechanical wrapping technology. Wang Ge, Secretary-General of the National Bamboo and Rattan Standardization Technical Committee and researcher at the International Bamboo and Rattan Center, explained at the seminar that compared with traditional pipes, bamboo composite pressure pipes possess advantages such as high strength, insulation properties, corrosion resistance, light weight, low cost, and a long service life. They can largely replace traditional pipes like glass fiber pipes, plastic pipes, spiral welded pipes, and PCCP pipes, and can be widely used in industries such as water management, municipal services, and oil extraction, offering broad market prospects. The entity responsible for formulating and drafting these \"Specifications\" and \"Standards\" is Zhejiang Xinzhou Bamboo-Based Composite Materials Co., Ltd. A relevant official from Xinzhou Company presented the details of the discussions regarding the construction and acceptance criteria for bamboo composite pressure pipes, and sought the opinions of the representatives on the basis for determining the main contents of these specifications and standards, as well as on matters related to the transportation, loading/unloading, storage, installation, and maintenance of bamboo composite pressure pipes. At the seminar, experts from agencies such as the Ministry of Water Resources, the China Irrigation and Drainage Development Center, the Energy Conservation Center, and the Chinese Academy of Water Sciences, as well as water resources design firms from 16 provinces and municipalities across the country, believed that the development of the \"Construction and Acceptance Specifications for Bamboo Composite Pressure Pipes\" and the relevant \"Standards for Bamboo Composite Pressure Pipes\" would help establish a unified set of research methods and technical theories nationwide. These standards would provide guidance for improving the management of bamboo composite pressure pipe projects, ensuring project quality and construction safety, and enhancing economic efficiency and construction standards.

The standard for **Bamboo-Wound Composite Pipes** came into effect on March 1, 2020. On that date, the standard for **Bamboo-Wound Composite Pipes** (GB/T 37805-2019) was officially implemented. This is the first **standard** for bamboo-wrapped composite pipes in our country; it plays a significant role in improving the quality of these bamboo-based composite pipes and in ensuring the healthy and orderly development of the industry. Bamboo-wrapped composite pipes are pipe products made using bamboo as the base material and thermosetting resin as the adhesive, through a winding process. It can not only replace traditional high-energy-consuming materials such as steel bars, cement, and plastic, but also possesses properties such as earthquake resistance, settlement resistance, heat insulation and frost protection, as well as corrosion resistance. In order to improve the performance and quality of bamboo-wrapped composite pipe products, enhance the industry’s innovation capacity, and promote sustainable development in this sector, in 2017, the **Standardization Management Committee** issued a plan for formulating standards for bamboo-wrapped composite pipes; standard development work was carried out, and these standards were officially released in August 2019. The **standard for bamboo-wrapped composite pipes** establishes standardized technical requirements, testing methods, inspection rules, labeling, packaging, transportation, and storage procedures for such pipes through strict definitions of relevant concepts, thereby creating a fundamental and unified standard that serves as a basis for the industry. “The national standard for \"Bamboo-Wound Composite Pipes\" is divided into 10 parts. The main contents include the terms and definitions of bamboo-wound composite pipes and fittings, their classification and marking, technical requirements, dimensional specifications for the pipes and fittings, requirements for raw materials, inspection methods, inspection rules, as well as labeling, packaging, transportation, and storage. ”The person in charge of Zhejiang Xinzhou Bamboo-Based Composite Materials Technology Co., Ltd., the organization responsible for drafting this standard, said that the bamboo-wrapped composite pipe is a new product developed jointly by Zhejiang Xinzhou and the International Bamboo and Rattan Center. In 2014, the \"Development Plan for Bamboo-Wrapped Composite Pressure Materials (2014–2020)\」was released; in 2015, the enterprise standard for \"Bamboo Composite Pressure Pipes\" was issued; in 2016, the enterprise standard for \"Bamboo-Wrapped Composite Pipe Tunnels\" was published; in 2017, the \"Technical Specifications for Bamboo-Wrapped Composite Pipelines\" came into effect, along with the forestry industry standard \"LY/T 2905–2017 Bamboo-Wrapped Composite Pipes\". To date, 171 patents have been granted for bamboo-wrapped composite materials, including 37 invention patents, thereby securing independent intellectual property rights. Image: Bamboo-wrapped composite pipe corridors. A relevant official from the Standard Technology Management Department of the State Administration for Market Regulation said that the implementation of the national standard for \"Bamboo-wrapped composite pipes\" helps to take advantage of China’s advantages in bamboo resources and improve the efficiency of utilizing these resources ； It can encourage bamboo-wrapped composite pipe manufacturers to adopt advanced technologies, improve production processes, implement quality control over the production process, and enhance the quality of such pipes ； It helps to standardize the production industry of bamboo-wrapped composite pipes and provides a basis for product quality supervision ； It helps promote the development of the pipeline industry in a green and low-carbon direction, and holds great significance in areas such as energy conservation and emission reduction, as well as carbon sequestration.