Structural Characteristics of Black Jacket Directly Buried Straight Seam Steel Pipe

一局部：防腐內(nèi)任務(wù)鋼管

Part I: Anti-corrosion Internal Task Steel Pipe

普通狀況下依據(jù)客戶(hù)的設(shè)計(jì)要求或國(guó)度規(guī)范的設(shè)計(jì)要求來(lái)停止選擇執(zhí)行規(guī)范爲(wèi)GB3092-93的直縫焊管、GB8163-87的無(wú)縫鋼管以及執(zhí)行規(guī)范爲(wèi)GB9711-88、SY/T5037的螺旋鋼管等來(lái)作爲(wèi)其保送介質(zhì)的內(nèi)任務(wù)鋼管，鋼管外表停止拋丸除銹技術(shù)等級(jí)到達(dá)GB8923規(guī)范中的SA2級(jí)，其鋼管外表的粗糙度到達(dá)GB6060.5規(guī)范中的R=12.5微米，其鋼管外表停止除污除銹技術(shù)后，會(huì)涂刷上一層防腐涂料，來(lái)進(jìn)一步增強(qiáng)其防水防腐蝕的功能，內(nèi)任務(wù)鋼管的管徑大小分爲(wèi)多種型號(hào)，來(lái)供客戶(hù)選擇。（內(nèi)任務(wù)鋼管的局部管徑型號(hào)：Φ20、25、32、34、38、40、42、48、57、76、89、108、133、159、219、273、325、377、426、478、529、630、720、820、920、1020、1120、1220、1320、1420等多種型號(hào)。）

Under normal conditions, according to the design requirements of customers or the design requirements of national codes, the straight seam welded pipe GB3092-93, seamless steel pipe GB8163-87 and spiral steel pipe GB9711-88 and SY/T5037 are selected as the internal task steel pipe for its delivery medium. The technical grade of shot blasting and rust removal on the outer surface of steel pipe reaches SA2 level in GB8923 specification, and the outer appearance of steel pipe reaches SA2 level in GB8923 specification. The roughness of the steel pipe reaches R=12.5 micron in GB6060.5 specification. After the surface of the steel pipe stops decontamination and rust removal technology, it will be coated with an anticorrosive coating to further enhance its waterproof and anticorrosive function. The diameter of the inner task steel pipe can be divided into several types for customers to choose. (Local diameter models of internal task steel pipes: 20, 25, 32, 34, 38, 40, 42, 48, 57, 76, 89, 108, 133, 159, 219, 273, 325, 377, 426, 478, 529, 630, 720, 820, 920, 1020, 1120, 1220, 1320, 1420, etc.)

第二局部：硬質(zhì)聚氨酯泡沫塑料保溫層

Second part: rigid polyurethane foam insulation layer

硬質(zhì)聚氨酯泡沫塑料保溫層是由高功用聚醚多元醇和甲基多苯基多異氰酸酯爲(wèi)原料，依照一定的比例停止諧和，經(jīng)過(guò)特殊的設(shè)備借助于液體的活動(dòng)性，將諧和后的液體一次性注入內(nèi)任務(wù)鋼管與高密度聚乙烯外護(hù)管之間的空隙中，經(jīng)過(guò)化學(xué)反響發(fā)泡，使其發(fā)泡充沛的布滿(mǎn)內(nèi)任務(wù)鋼管與高密度聚乙烯外護(hù)管之間的空腔中，借助于硬質(zhì)聚氨酯泡沫塑料的粘結(jié)性，使二者緊緊的粘結(jié)成爲(wèi)一個(gè)不易零落的全體。

Rigid polyurethane foam insulation layer is made of high-performance polyether polyols and methyl polyphenyl polyisocyanate as raw materials, according to a certain proportion to stop harmony, through special equipment with the help of liquid activity, the harmony of the liquid once injected into the gap between the internal task steel pipe and the high-density polyethylene outer guard pipe, through chemical reaction, foaming, making it foam filling. With the help of the super-strong cohesion of rigid polyurethane foam plastics in the cavity between the high-density polyethylene outer guard pipe and the full-filled inner task steel pipe, the tight cohesion of the two becomes a whole which is not easy to be scattered.

第三局部：高密度聚乙烯外護(hù)管

Part 3: High Density Polyethylene External Protector

高密度聚乙烯外護(hù)管在制造進(jìn)程中選用的是優(yōu)良的PE高密度聚乙烯爲(wèi)原料，采用的真空定徑設(shè)備和高明的消費(fèi)工藝來(lái)停止消費(fèi)，高密度聚乙烯外護(hù)管的管徑大小和管材的壁厚，均可以依據(jù)客戶(hù)的設(shè)計(jì)要求或國(guó)度規(guī)范的設(shè)計(jì)要求來(lái)停止消費(fèi)，高密度聚乙烯外護(hù)管的管材顏色普通狀況下分爲(wèi)黑色和黃色兩種顏色，及黑夾克管和黃夾克管，其管材的根底資料和功能目標(biāo)完全相反。

High density polyethylene exterior guard pipe is made of excellent PE high density polyethylene as raw material, advanced vacuum sizing equipment and smart consumption process are adopted to stop consumption. The diameter and wall thickness of high density polyethylene exterior guard pipe can stop consumption according to the design requirements of customers or the design requirements of national standards. High density polyethylene exterior guard pipe Under normal conditions, the pipes can be divided into black and yellow colors, and black jacket and yellow jacket pipes. The basic data and functional objectives of the pipes are completely opposite.

直埋式聚氨酯保溫管的劣勢(shì)特點(diǎn)：

The disadvantage characteristics of direct-buried polyurethane insulating pipe:

1、直埋式聚氨酯保溫管選用的是硬質(zhì)聚氨酯泡沫塑料作爲(wèi)其保溫層，硬質(zhì)聚氨酯泡沫塑料的閉孔率到達(dá)百分之九十七左右，其吸水率極低，避免了外界水、腐蝕性液體、微生物等的浸入，阻止了微生物的開(kāi)展與消費(fèi)，使直埋式聚氨酯保溫管的運(yùn)用壽命失掉進(jìn)一步的保證。

1. The rigid polyurethane foam is chosen as the insulation layer of the direct-buried polyurethane insulation pipe. The closed-cell ratio of the rigid polyurethane foam plastic reaches about 97%, and its water absorption rate is very low. It avoids the immersion of external water, corrosive liquid and microorganisms, prevents the development and consumption of microorganisms, and further loses the service life of the direct-buried polyurethane insulation pipe. Guarantee.

2、硬質(zhì)聚氨酯泡沫塑料保溫層的保溫功能極高，其熱損失僅爲(wèi)傳統(tǒng)管材的百分之二十五，臨時(shí)少量的運(yùn)轉(zhuǎn)運(yùn)用，可以節(jié)省少量的動(dòng)力，從而降低了動(dòng)力的本錢(qián)。

2. The thermal insulation function of rigid polyurethane foam plastic insulation layer is very high, its heat loss is only 25% of the traditional pipes. Temporary small amount of operation can save a small amount of power, thus reducing the cost of power.

3、由于直埋式聚氨酯保溫管具有防水防腐蝕的功能，所以在施工進(jìn)程中不需求敷設(shè)管溝，可以間接埋上天下或水中，延長(zhǎng)了施工周期，降低了施工本錢(qián)。

3. Because the direct-buried polyurethane insulation pipe has the function of waterproof and anticorrosion, it is not necessary to lay pipe trenches in the construction process. It can be indirectly buried in the world or water, prolonging the construction period and reducing the construction cost.

4、依據(jù)國(guó)外相關(guān)材料調(diào)查顯示，以正確的辦法運(yùn)用直埋式聚氨酯保溫管，可以使其運(yùn)用壽命到達(dá)30年50年左右。

4. According to the investigation of foreign related materials, the application of direct-buried polyurethane insulation pipe in the right way can make its service life reach about 30 to 50 years.

5、易于施工、施工周期短、操作復(fù)雜快捷、一次成型等劣勢(shì)特點(diǎn)。

5. Easy to construct, short construction period, complex and fast operation, one-time forming and other disadvantages.

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