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鐞冮枼绯诲垪 |  |
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闁橀枼绯诲垪 | |
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鎴闁ョ郴鍒� | |
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姝㈠洖闁ョ郴鍒� | |
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铦堕枼绯诲垪 | |
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瑾�(di脿o)绡�(ji茅)闁ョ郴鍒� | |
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涓嶉姽閶奸枼绯诲垪 | |
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娓涘闁ョ郴鍒� | |
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姘村埄鎺у埗闁ョ郴鍒� | |
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鏌卞闁� | |
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鎺掓埃闁� | |
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婕挎枡鏀炬枡闁ョ郴鍒� | |
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娌圭綈杌�(ch膿)灏�(zhu膩n)鐢ㄩ枼闁�(m茅n) | |
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鏃嬪闁ョ郴鍒� | |
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绠″ぞ闁ョ郴鍒� | |
闃叉按閷樻帓姘ｉ枼
- 鍨� 铏�(h脿o)锛�FOX
- 椤�(l猫i) 鍒ワ細闃叉按閷樻帓姘ｉ枼
- 鍍�(ji脿) 鏍硷細锟�闈㈣
- 鐢�(ch菐n) 鍦帮細
闃叉按閷樻帓姘ｉ枼鍦ㄥ湅(gu贸)澶栧凡缍�(j墨ng)杓冪偤寤ｆ硾鍦拌瑾�(r猫n)鍙�锛屼篃鏈夊ぇ閲忕殑鎳�(y墨ng)鐢ㄥ(sh铆)渚�銆傚湪姘撮寴鍒嗘瀽鏂归潰宸茬稉(j墨ng)鍋氱偤鎴愮啛鐨勯倞鐣屾浠惰ō(sh猫)鍒椾簬瑙ｆ焙鏂规鐣�(d膩ng)涓�銆備絾鏄敱浜庡湅(gu贸)鍏�(n猫i)甯傚牬(ch菐ng)杓冨皬锛屽苟娌�(m茅i)鏈夌浉闂�(gu膩n)鐨勫粻(ch菐ng)瀹堕��(j矛n)琛岀爺鍒�銆�
闃叉按閷樻帓姘ｉ枼鍦ㄥ湅(gu贸)澶栧凡缍�(j墨ng)杓冪偤寤ｆ硾鍦拌瑾�(r猫n)鍙�锛屼篃鏈夊ぇ閲忕殑鎳�(y墨ng)鐢ㄥ(sh铆)渚�銆傚湪姘撮寴鍒嗘瀽鏂归潰宸茬稉(j墨ng)鍋氱偤鎴愮啛鐨勯倞鐣屾浠惰ō(sh猫)鍒椾簬瑙ｆ焙鏂规鐣�(d膩ng)涓�銆備絾鏄敱浜庡湅(gu贸)鍏�(n猫i)甯傚牬(ch菐ng)杓冨皬锛屽苟娌�(m茅i)鏈夌浉闂�(gu膩n)鐨勫粻(ch菐ng)瀹堕��(j矛n)琛岀爺鍒�銆傚張鐢变簬鍏剁浜岄殠娈电殑鎺掓埃瀛斿緫寰�寰�闇�瑕佽▓(j矛)绠楅伕鍙栵紝鍥犳瑭茬敘(ch菐n)鍝佽捣姝ヨ不(f猫i)鐢ㄩ珮锛屽苟涓旈渶瑕佹壙鎿�(d膩n)涓�浜涜铂(z茅)浠�锛屽洜姝ゅ競鍫�(ch菐ng)鍚稿紩鍔涗笉澶�銆�
涓�锛氳┎绋�闃叉按閷樻帓姘ｉ枼鍙堝彨鍏╅殠娈电┖姘ｉ枼锛屾湁鐨勫墖鍔犱笂寰噺鎺掓埃閮ㄥ垎鐨�“灏忔帓姘�”鍓囩ū(ch膿ng)鐐轰笁闅庢绌烘埃闁�锛屽叾宸ヤ綔鍏�(n猫i)瀹规槸鐩稿悓鐨勩�傛墍鏈夎┎椤�(l猫i)鐨勭┖姘ｉ枼鏄湪鏅�氱┖姘ｉ枼鐨勫熀绀�(ch菙)涓�锛屽湪浣嶄簬闁ュ彛铏曡ō(sh猫)缃竴鐗瑰埗鐨勭珐娌栫洡(p谩n)鐗�锛屼竴鑸偤杓曡唱(zh矛)閲戝爆鎴栧鏂欏埗鎴�銆傛湁涓�瀹氱殑鎶�琛�(sh霉)鍚噺銆�
鍏剁啊(ji菐n)鍠殑鍔熻兘鎻忚堪鏄細蹇�熼�氭殺鍦伴��(j矛n)姘�锛屽湪浣庡楂橀�熸帓姘ｆ檪(sh铆)锛屾帓姘ｉ�熷害鍙楀埌鎺у埗锛屽嵆蹇��(j矛n)绶╂帓銆�
鍏舵帓姘ｅ伐浣滃師鐞嗗涓嬶細
浣庢祦閫熸帓姘�: 娴悆a & b鍦ㄩ枊(k膩i)鍟熶綅缃�锛岀珐娌栫鐗�d 涔熻檿浜庢墦闁�(k膩i)浣嶇疆銆�
b. 楂樻祦閫熸帓姘ｏ細绶╂矕纰熺墖d 琚棞(gu膩n)闁�锛岀┖姘ｅ儏鑳藉緸闁ラ杸(m茅n)鍋�(c猫)闈㈠皬瀛旀帓鍑猴紝骞舵祦閫熸笡绶�銆備娇寰楃閬撲腑姘存祦閫熷害鍥犳埃楂斿鍔涜�屾笡鎱紝閬垮厤姝ｅ悜姘撮寴鐨勭敘(ch菐n)鐢�銆�
c. 姘翠綅涓婂崌鑷抽枼鍏�(n猫i)锛氭诞鐞�a & b闂�(gu膩n)闁変富鎺掓埃瀛斻�傜敱浜庣劇(w煤)澹撳樊锛岀珐娌栫鐗�d涓嬭惤锛屼繚鎸佹墦闁�(k膩i)鐙�鎱�(t脿i)銆傛鏅�(sh铆)闁ラ杸(m茅n)姝ｅ父鎺掓埃宸ヤ綔銆�
鍒╃敤瑭茬ó闁ラ杸(m茅n)锛屽彲浠ュ揩閫熻(b菙)姘�锛岄伩鍏嶅嚭鐝�(xi脿n)璨�(f霉)澹撳伐娉�锛屽悓鏅�(sh铆)鍦ㄦ按鏌卞綄鍚堟檪(sh铆)锛岀敱浜庣珐鎱㈡帓姘�锛岃�屽湪绠￠亾鍏�(n猫i)鐢�(ch菐n)鐢熷綀鎬х┖姘ｅ泭锛屽欢闀�(zh菐ng)姘存煴褰屽悎鐨勬檪(sh铆)闁擄紝閫�(j矛n)鑰屾笡灏忔按娴侀�熷害鐨勮畩鍖栫巼锛屽鍔涙尝鍕�(d貌ng)鏈�(hu矛)鏈夋晥鍦伴檷浣�銆�闃叉按閷樻帓姘ｉ枼鍔熻兘鎻忚堪锛�
2.1闁ラ杸(m茅n)鐨勮ō(sh猫)瑷�(j矛)鑸囧埗閫犳噳(y墨ng)瀹屽叏绗﹀悎鏈妧琛�(sh霉)瑕�(gu墨)鏍兼浉(sh奴)鍙婄浉闂�(gu膩n)妯�(bi膩o)婧�(zh菙n)鐨勮姹�銆�
2.2绲勫悎寮忕┖姘ｉ枼鍒嗙偤浣庡閫�(j矛n)鎺掓埃鍜岄珮澹撳井閲忔帓姘ｅ叐閮ㄥ垎銆�
2.3浣庡閫�(j矛n)鎺掓埃閮ㄥ垎鏄湪绠￠亾澹撳姏杓冧綆鏅�(sh铆)锛堢┖绠″厖姘达紝绠￠亾鎺掔┖绛夛級宸ヤ綔锛屼富瑕佺偤浣庡宸ユ硜涓嬪ぇ閲忔帓姘ｅ拰閫�(j矛n)姘�銆�
2.4楂樺寰噺鎺掓埃鍓囦富瑕佸湪绠￠亾姝ｅ父甯跺宸ヤ綔鏅�(sh铆)锛屽皣绠￠亾鍏�(n猫i)涓嶆柗鏋愬嚭鐨勬埃楂斿強鏅�(sh铆)鎺掓斁锛屼互娓涘皯鍥犱箣鍙兘鐢�(ch菐n)鐢熺殑澶氱ó涓嶅埄鍚庢灉銆�
2.5 鏁村��(g猫)闁ラ珨鎳�(y墨ng)鐐烘暣楂旈憚閫犺�屾垚锛屼笉鍏佽ū閫氶亷(gu貌)鐒婃帴閫ｆ帴銆�
2.6 绌烘埃闁ョ殑閫氳矾鎳�(y墨ng)绗﹀悎娴侀珨鍔涘(xu茅)瑷�(sh猫)瑷�(j矛)锛屼繚璀夌劇(w煤)闃荤銆�
2.7 绌烘埃闁ユ噳(y墨ng)鏈夊叐鍊�(g猫)娴瓛锛嶅ぇ娴瓛鍜屽皬娴瓛锛屽垎鍒ヨ矤(f霉)璨�(z茅)浣庡閫�(j矛n)鎺掓埃鑸囬珮澹撳井閲忔帓姘�銆傚皬娴瓛瀹夎鍦ㄥぇ娴瓛鐨勪笂鏂�锛屽苟涓斿叐鍊�(g猫)娴瓛鍧囧湪涓婚枼楂斿収(n猫i)銆�
2.8 娴瓛鐐哄湏鏌卞舰銆�
2.9 绌烘埃闁ュ付鏈夌珐娌栫鐗�锛岀⒑淇濆钩绶╂帓姘ｏ紝闃叉鍑虹従(xi脿n)“姘ｅ牭”鐮村鐨勬儏娉�銆傜珐娌栫墖鍦ㄧ稉(j墨ng)姝烽珮閫熸帓姘ｆ檪(sh铆)鎵�閫氶亷(gu貌)鐨勯潰绌嶄互鍙婂皬瀛旂殑鏁�(sh霉)閲忓彲鍋氳(di脿o)鏁�銆�
涓�銆�闃叉按閷樻帓姘ｉ枼鎶�琛�(sh霉)鐗规�э細
3.1绌烘埃闁ユ噳(y墨ng)瑭茶兘澶犲湪绠＄窔(xi脿n)姘村闄嶅埌
3.2鍦ㄧ绶�(xi脿n)鎺掔┖閬�(gu貌)绋嬩腑锛屽湪娉勬按閫熷害瓒呴亷(gu貌)
3.3鍦ㄧ绶�(xi脿n)姝ｅ父閬�(y霉n)琛岄亷(gu貌)绋嬩腑锛岀┖姘ｉ枼鍙互鑷嫊(d貌ng)閲嬫斁閫愭鑱氶泦鍦ㄧ绶�(xi脿n)楂橀粸(di菐n)鐨勭┖姘�锛岄伩鍏嶇敱浜庢埃鍥婇�犳垚鐨勬按鎼�銆�
3.4楂樺瀵嗗皝鍓囩偤闅旈洟寮忓瘑灏�锛岄枼涓按浣嶆案閬�(yu菐n)浣庝簬鎺掓埃瀛�锛屼互闃叉鍫靛鐝�(xi脿n)璞°��
3.5鏁撮珨绲�(ji茅)妲�(g貌u)绨�(ji菐n)鍠�锛屾矑(m茅i)鏈夐亷(gu貌)澶氶檮浠躲�侀厤浠�锛屼笉閵硅潟锛屾晠闅滅巼浣�锛岄噸閲忚紩锛屼究浜庡畨瑁濊垏缍(h霉)銆傞槻鑵愭�ц兘寮�(qi谩ng)锛岀鍚堥２鐢ㄦ按妯�(bi膩o)婧�(zh菙n)銆�
鍥�銆�闃叉按閷樻帓姘ｉ枼瑕�(gu墨)鏍煎強鏉愯唱(zh矛)锛�
4.1 涓婚枼楂旀潗璩�(zh矛)鐐�GGG50鐞冨ⅷ閼勯惖锛�WCB銆�
4.2 鍒堕�犲晢鎳�(y墨ng)鏄庣⒑妯�(bi膩o)绀烘诞鐞冪殑鐣ュ皬浜庢按鐨勫瘑搴�锛岀偤
4.3 绌烘埃闁ョ殑鎺掓埃瀵嗗皝澧婃潗璩�(zh矛)鐐轰箼涓欐鑶狅紙EPDM锛�銆�
4.4 寰噺鎺掓埃瀛斿強鍏堕�氳矾閲囩敤316涓嶉姽閶硷紝閬垮厤鍥�?y脿n)娈嘝铦曚互鍙婄敓鐗╄啘鐨勭敘(ch菐n)鐢�銆�
4.5 绌烘埃闁ョ殑鍏�(n猫i)澶栭儴鍣存秱閲囩敤鑱氶叝鐑ゆ紗銆�
4.6 绶╂矕鐗囩敱杓曡唱(zh矛)閲戝爆鏉愯唱(zh矛)鍋氭垚銆�
4.7 澹撳姏绛夌礆(j铆)1.6Mpa, PN
4.8 鐢�(ch菐n)鍝佽(gu墨)鏍艰寖鍦嶏細DN25 – DN300 (
闃叉按閷樻帓姘ｉ枼鍦ㄥ湅(gu贸)澶栧凡缍�(j墨ng)杓冪偤寤ｆ硾鍦拌瑾�(r猫n)鍙紝涔熸湁澶ч噺鐨勬噳(y墨ng)鐢ㄥ(sh铆)渚�銆傚湪姘撮寴鍒嗘瀽鏂归潰宸茬稉(j墨ng)鍋氱偤鎴愮啛鐨勯倞鐣屾浠惰ō(sh猫)鍒椾簬瑙ｆ焙鏂规鐣�(d膩ng)涓�銆備絾鏄敱浜庡湅(gu贸)鍏�(n猫i)甯傚牬(ch菐ng)杓冨皬锛屽苟娌�(m茅i)鏈夌浉闂�(gu膩n)鐨勫粻(ch菐ng)瀹堕��(j矛n)琛岀爺鍒�銆傚張鐢变簬鍏剁浜岄殠娈电殑鎺掓埃瀛斿緫寰�寰�闇�瑕佽▓(j矛)绠楅伕鍙�锛屽洜姝よ┎鐢�(ch菐n)鍝佽捣姝ヨ不(f猫i)鐢ㄩ珮锛屽苟涓旈渶瑕佹壙鎿�(d膩n)涓�浜涜铂(z茅)浠�锛屽洜姝ゅ競鍫�(ch菐ng)鍚稿紩鍔涗笉澶�銆�
涓�锛氳┎绋�闃叉按閷樻帓姘ｉ枼鍙堝彨鍏╅殠娈电┖姘ｉ枼锛屾湁鐨勫墖鍔犱笂寰噺鎺掓埃閮ㄥ垎鐨�“灏忔帓姘�”鍓囩ū(ch膿ng)鐐轰笁闅庢绌烘埃闁ワ紝鍏跺伐浣滃収(n猫i)瀹规槸鐩稿悓鐨�銆傛墍鏈夎┎椤�(l猫i)鐨勭┖姘ｉ枼鏄湪鏅�氱┖姘ｉ枼鐨勫熀绀�(ch菙)涓�锛屽湪浣嶄簬闁ュ彛铏曡ō(sh猫)缃竴鐗瑰埗鐨勭珐娌栫洡(p谩n)鐗�锛屼竴鑸偤杓曡唱(zh矛)閲戝爆鎴栧鏂欏埗鎴�銆傛湁涓�瀹氱殑鎶�琛�(sh霉)鍚噺銆�
鍏剁啊(ji菐n)鍠殑鍔熻兘鎻忚堪鏄細蹇�熼�氭殺鍦伴��(j矛n)姘�锛屽湪浣庡楂橀�熸帓姘ｆ檪(sh铆)锛屾帓姘ｉ�熷害鍙楀埌鎺у埗锛屽嵆蹇��(j矛n)绶╂帓銆�
鍏舵帓姘ｅ伐浣滃師鐞嗗涓嬶細
浣庢祦閫熸帓姘�: 娴悆a & b鍦ㄩ枊(k膩i)鍟熶綅缃�锛岀珐娌栫鐗�d 涔熻檿浜庢墦闁�(k膩i)浣嶇疆銆�
b. 楂樻祦閫熸帓姘ｏ細绶╂矕纰熺墖d 琚棞(gu膩n)闁夛紝绌烘埃鍍呰兘寰為枼闁�(m茅n)鍋�(c猫)闈㈠皬瀛旀帓鍑�锛屽苟娴侀�熸笡绶�銆備娇寰楃閬撲腑姘存祦閫熷害鍥犳埃楂斿鍔涜�屾笡鎱紝閬垮厤姝ｅ悜姘撮寴鐨勭敘(ch菐n)鐢�銆�
c. 姘翠綅涓婂崌鑷抽枼鍏�(n猫i)锛氭诞鐞�a & b闂�(gu膩n)闁変富鎺掓埃瀛�銆傜敱浜庣劇(w煤)澹撳樊锛岀珐娌栫鐗�d涓嬭惤锛屼繚鎸佹墦闁�(k膩i)鐙�鎱�(t脿i)銆傛鏅�(sh铆)闁ラ杸(m茅n)姝ｅ父鎺掓埃宸ヤ綔銆�
鍒╃敤瑭茬ó闁ラ杸(m茅n)锛屽彲浠ュ揩閫熻(b菙)姘�锛岄伩鍏嶅嚭鐝�(xi脿n)璨�(f霉)澹撳伐娉�锛屽悓鏅�(sh铆)鍦ㄦ按鏌卞綄鍚堟檪(sh铆)锛岀敱浜庣珐鎱㈡帓姘�锛岃�屽湪绠￠亾鍏�(n猫i)鐢�(ch菐n)鐢熷綀鎬х┖姘ｅ泭锛屽欢闀�(zh菐ng)姘存煴褰屽悎鐨勬檪(sh铆)闁�锛岄��(j矛n)鑰屾笡灏忔按娴侀�熷害鐨勮畩鍖栫巼锛屽鍔涙尝鍕�(d貌ng)鏈�(hu矛)鏈夋晥鍦伴檷浣�銆�闃叉按閷樻帓姘ｉ枼鍔熻兘鎻忚堪锛�
2.1闁ラ杸(m茅n)鐨勮ō(sh猫)瑷�(j矛)鑸囧埗閫犳噳(y墨ng)瀹屽叏绗﹀悎鏈妧琛�(sh霉)瑕�(gu墨)鏍兼浉(sh奴)鍙婄浉闂�(gu膩n)妯�(bi膩o)婧�(zh菙n)鐨勮姹�銆�
2.2绲勫悎寮忕┖姘ｉ枼鍒嗙偤浣庡閫�(j矛n)鎺掓埃鍜岄珮澹撳井閲忔帓姘ｅ叐閮ㄥ垎銆�
2.3浣庡閫�(j矛n)鎺掓埃閮ㄥ垎鏄湪绠￠亾澹撳姏杓冧綆鏅�(sh铆)锛堢┖绠″厖姘�锛岀閬撴帓绌虹瓑锛夊伐浣滐紝涓昏鐐轰綆澹撳伐娉佷笅澶ч噺鎺掓埃鍜岄��(j矛n)姘�銆�
2.4楂樺寰噺鎺掓埃鍓囦富瑕佸湪绠￠亾姝ｅ父甯跺宸ヤ綔鏅�(sh铆)锛屽皣绠￠亾鍏�(n猫i)涓嶆柗鏋愬嚭鐨勬埃楂斿強鏅�(sh铆)鎺掓斁锛屼互娓涘皯鍥犱箣鍙兘鐢�(ch菐n)鐢熺殑澶氱ó涓嶅埄鍚庢灉銆�
2.5 鏁村��(g猫)闁ラ珨鎳�(y墨ng)鐐烘暣楂旈憚閫犺�屾垚锛屼笉鍏佽ū閫氶亷(gu貌)鐒婃帴閫ｆ帴銆�
2.6 绌烘埃闁ョ殑閫氳矾鎳�(y墨ng)绗﹀悎娴侀珨鍔涘(xu茅)瑷�(sh猫)瑷�(j矛)锛屼繚璀夌劇(w煤)闃荤銆�
2.7 绌烘埃闁ユ噳(y墨ng)鏈夊叐鍊�(g猫)娴瓛锛嶅ぇ娴瓛鍜屽皬娴瓛锛屽垎鍒ヨ矤(f霉)璨�(z茅)浣庡閫�(j矛n)鎺掓埃鑸囬珮澹撳井閲忔帓姘�銆傚皬娴瓛瀹夎鍦ㄥぇ娴瓛鐨勪笂鏂癸紝骞朵笖鍏╁��(g猫)娴瓛鍧囧湪涓婚枼楂斿収(n猫i)銆�
2.8 娴瓛鐐哄湏鏌卞舰銆�
2.9 绌烘埃闁ュ付鏈夌珐娌栫鐗囷紝纰轰繚骞崇珐鎺掓埃锛岄槻姝㈠嚭鐝�(xi脿n)“姘ｅ牭”鐮村鐨勬儏娉�銆傜珐娌栫墖鍦ㄧ稉(j墨ng)姝烽珮閫熸帓姘ｆ檪(sh铆)鎵�閫氶亷(gu貌)鐨勯潰绌嶄互鍙婂皬瀛旂殑鏁�(sh霉)閲忓彲鍋氳(di脿o)鏁�銆�
涓�銆�闃叉按閷樻帓姘ｉ枼鎶�琛�(sh霉)鐗规�э細
3.1绌烘埃闁ユ噳(y墨ng)瑭茶兘澶犲湪绠＄窔(xi脿n)姘村闄嶅埌
3.2鍦ㄧ绶�(xi脿n)鎺掔┖閬�(gu貌)绋嬩腑锛屽湪娉勬按閫熷害瓒呴亷(gu貌)
3.3鍦ㄧ绶�(xi脿n)姝ｅ父閬�(y霉n)琛岄亷(gu貌)绋嬩腑锛岀┖姘ｉ枼鍙互鑷嫊(d貌ng)閲嬫斁閫愭鑱氶泦鍦ㄧ绶�(xi脿n)楂橀粸(di菐n)鐨勭┖姘�锛岄伩鍏嶇敱浜庢埃鍥婇�犳垚鐨勬按鎼�銆�
3.4楂樺瀵嗗皝鍓囩偤闅旈洟寮忓瘑灏�锛岄枼涓按浣嶆案閬�(yu菐n)浣庝簬鎺掓埃瀛�锛屼互闃叉鍫靛鐝�(xi脿n)璞�銆�
3.5鏁撮珨绲�(ji茅)妲�(g貌u)绨�(ji菐n)鍠�锛屾矑(m茅i)鏈夐亷(gu貌)澶氶檮浠�銆侀厤浠讹紝涓嶉姽铦�锛屾晠闅滅巼浣庯紝閲嶉噺杓�锛屼究浜庡畨瑁濊垏缍(h霉)銆傞槻鑵愭�ц兘寮�(qi谩ng)锛岀鍚堥２鐢ㄦ按妯�(bi膩o)婧�(zh菙n)銆�
鍥涖��闃叉按閷樻帓姘ｉ枼瑕�(gu墨)鏍煎強鏉愯唱(zh矛)锛�
4.1 涓婚枼楂旀潗璩�(zh矛)鐐�GGG50鐞冨ⅷ閼勯惖锛�WCB銆�
4.2 鍒堕�犲晢鎳�(y墨ng)鏄庣⒑妯�(bi膩o)绀烘诞鐞冪殑鐣ュ皬浜庢按鐨勫瘑搴�锛岀偤
4.3 绌烘埃闁ョ殑鎺掓埃瀵嗗皝澧婃潗璩�(zh矛)鐐轰箼涓欐鑶狅紙EPDM锛�銆�
4.4 寰噺鎺掓埃瀛斿強鍏堕�氳矾閲囩敤316涓嶉姽閶�锛岄伩鍏嶅洜?y脿n)娈嘝铦曚互鍙婄敓鐗╄啘鐨勭敘(ch菐n)鐢�銆�
4.5 绌烘埃闁ョ殑鍏�(n猫i)澶栭儴鍣存秱閲囩敤鑱氶叝鐑ゆ紗銆�
4.6 绶╂矕鐗囩敱杓曡唱(zh矛)閲戝爆鏉愯唱(zh矛)鍋氭垚銆�
4.7 澹撳姏绛夌礆(j铆)1.6Mpa, PN
4.8 鐢�(ch菐n)鍝佽(gu墨)鏍艰寖鍦嶏細DN25 – DN300 (
